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Relentless Forward Progress: A Guide to Running Ultramarathons

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Marathons have become too easy for some runners. What was once the pinnacle of achievement in a runner’s life is now a stepping stone for extraordinary adventure in ultramarathoning. The number of ultrarunners—those running distances of 50k (31miles), 50 miles, 100k (62 miles), or 100 miles—is growing astronomically each year.

Dean Karnazes’ Ultramarathon Man and Chris McDougall’s Born to Run have inspired tens of thousands to try these seemingly superhuman distances. But to date, there has been no practical guide to ultramarathoning. Now, Bryon Powell has written Relentless Forward Progress, the first how-to manual for aspiring ultrarunners. Powell covers every aspect of training for and racing ultra distances. This encyclopedic volume prepares runners for going farther than they have ever gone before and, in the process, shows them that they are capable of the “impossible.”

208 pages, Paperback

First published April 1, 2011

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Bryon Powell

2 books6 followers

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Displaying 1 - 30 of 165 reviews
Profile Image for Jeannie.
18 reviews2 followers
January 1, 2012
I read this book with a highlighter pen. You might be wondering why someone who has experience running ultras already is doing reading this book, but I've been learning that you never quit learning to run and I learned from the book. I really enjoyed it.

The book starts out talking about the ultramarathon, what it is and why you should run one and when is a good time to attempt one. The book goes on to talk about training pace, what your weekly mileage should before attempt to train for an ultra, the 10% rule, speaks a lot on speed training and how and why speed training
is not necessary for an ultra, recovery, tapering, cross training, burnout, over-training, heat and cold training, altitude training, course specifics-road running, trail running, running up or down hills, has training schedules for a 50K through a 100 miles and talks a little about each distance, it even talks about staying safe on the trails, hydration and electrolytes, fueling, nutrition, injuries, feet care, choosing your first ultra, race day strategies, bare foot running, ultramarathon gear and other extreme adventures. The book also has a lot of neat passages from experienced ultramarathon runners.

You can order his book here: http://www.amazon.com/Relentless-Forw...
Profile Image for Mark.
8 reviews1 follower
June 13, 2013
After struggling to pick a fall event, I somehow came across this book & figured it'd be worth a read to see more about ultras, as a 30K or 50 miler is one of the things I'm considering. After reading it, I want to do one more than before I started.

Since I've done a lot of trail running, there weren't a whole lot of super surprising things in the book, but one thing especially jumped out at me - back to back bonk runs. The idea is to do 30-40 miles on Saturday, taking in fluids & electrolytes, but not calories. Dinner that night does *not* include carb loading at all. Then on Sunday, a "more modest" run of ~25 miles is done, to get you used to running on tired legs - this sounds horrible, but intriguing.

Another thing I learned is a term that describes something I suffer from: FOMO - fear of missing out. I want to run, play soccer, climb, hike, fish & on & on - there's just not enough hours in the day.

I'll probably appreciate the chapter on nutrition & fueling more when I get into it. Being "just" a marathoner, I've never had to pay all that much attention to it. It sounds like not doing so in an ultra is likely to ruin my day. Suggestions on the amount of fluid, electrolytes, calories, salt & "real food" requirements are given.

There was a nice section on pacers & support crews. I'd never thought all that much about them, but after having one for Sehgahunda, realize how important they are - and how lucky I was that race.

The book also includes training plans. I just plotted out an up-to-75 miles per week plan & was very surprised to see the overall milage for the included plans for even 50 milers was very similar. Some of the daily stuff changes a little, but it really made me think I could do one of these without too much of a jump.

While I'd heard of it prior, I didn't realize the author was the owner of the irunfar.com website - one of the go-to ultra sites out there.

Overall, this was an excellent book & really made me want to do an ultra. I'm sure I'll revisit several parts of it.
Profile Image for Adam.
8 reviews
January 14, 2016
A decent introduction to ultra running if you've only run shorter distances. Much of it is anecdotal. Almost all of the content was stuff that I figured out on my own over a couple of years of running longer distances or through conversations with other runners, but it is pretty complete if you're starting from scratch.
Profile Image for Michelle Lines.
281 reviews2 followers
December 29, 2012
This book is probably good for beginner runners. I wouldn't recommend this for anyone with a solid marathoning background or familiarity with running on trails. A lot of the information seemed more like common knowledge that an experienced runner would already have.
Profile Image for Thebestdogmom.
1,310 reviews7 followers
April 22, 2011
This book is jam packed with useful tips and techniques for ultra running. I can't think of a topic that is not covered in this book.
I am training for my first 100 miler, so the book was released at the perfect time for me.
It contains training plans for races from 50K to 100 miles.
My only wish was that I had read this before my 50 miler, the knowledge gained from this book would have helped me greatly.
Awesome book Byron. Thanks for sharing your running wisdom with us.
Profile Image for Monster.
75 reviews10 followers
November 6, 2012
Don't bother with this. iRunFar is an excellent website and blog, but this book is merely neatly organized internet research. Instead, read some Matt Fitzgerald and Bernd Heinrich. Read other exhaustive, aging and poorly organized ultrarunning websites. Perhaps throw in a biography or two for good measure.

Oh, and volunteer at races.
Profile Image for Kimball.
1,383 reviews20 followers
December 31, 2022
I wish this book was more of a memoir like Finding Ultra. This title was waisted.

Go to tantor.com and type in relentless Forward Progress then pdf extra one then the access code "barefoot"

The longer you've been running the longer chances are of finishing your first ultra.

People can get discouraged from doing a 50 miler if they've done a marathon. They think it's twice as hard but it's not because walking should almost always be done on parts of the ultra as opposed to running the whole marathon.

Go to extremeultrarunning.com

Eat fats while running instead of just carbs because the fats will stave off hunger longer.

Read the book fixing your feet and go to fixingyourfeat.con

Moisture, friction, and heat is the recipe for a blister on your feet.
Profile Image for Heidi.
164 reviews
Read
March 10, 2024
I’m not rating this one due to my own failing to read what this book was about prior to starting it.

I read the title and got extremely excited. “Relentless Forward Progress” was my mantra for my 100-miler and was looking forward to a motivating book with captivating stories on the trails. This book was not that because I missed the other half of the title: A guide for ultra running lol. Do I think this title was wasted? Yes. Could this be a good book for a beginner ultramarathoner? Sure. But I won’t rate a book low due to my own short sightedness.
Profile Image for Bree Taylor.
1,382 reviews2 followers
March 30, 2021
My husband has checked this book out so many times I thought we owned it.

Having finished my first ultra in June 2019 and in training for my second in June 2021, I was curious about the training aspects from a "guide" standpoint.

Sooooo much good information and a wonderful chart for checking hydration.

Definitely a must read for anyone planning to complete or compete in their first (or tenth) ultra.
Profile Image for Tom Greentree.
Author 1 book9 followers
September 14, 2021
Another helpful read. With Moehl’s (Running Your First Ultra) and Powell’s advice, I feel a much greater sense of confidence to train and run my first ultra.
Author 2 books4 followers
February 14, 2019
Must-Read for Runners Getting into Ultras

I thought there was something quirky and unique about “Relentless Forward Progress.” The entire book is split up into short, digestible sections on every conceivable topic related to ultrarunning. Some sections have guest writers who are established ultra runners. If you love reading about running and/or are intrigued by ultras, then you are going to devour this book. Before buying “Relentless” I checked out some of the reviews. Most were overwhelmingly positive, but there were a few negative ones, and the recurring theme seemed to be that readers found the book a bit basic. I admit there was nothing earth-shattering here. Critics mentioned that the book isn’t so different from marathon training guides. This is also true. A lot of the topics, on things ranging from training runs to hydration to foot care, were similar to what you’d find in a marathon guide. The very simple fact is that an ultra isn’t radically different from a marathon in terms of training. You should probably still do speed work, tempo runs, easy runs, and long runs. I think there are a couple important points to consider with “Relentless Forward Progress”: first, you can’t please all of the people all of the time, meaning that there are going to be a range of audiences for this book, all of whom have different expectations. There are those people who’ve never run anything longer than a marathon and are considering the ultra distances. There are those (like me) who’ve experimented with 50Ks and 50 milers and are toying with the idea of 100 milers. Then there are the 100 mile vets who continue to read every how-to guide they come across in hopes of gleaning new insights. This last group may be somewhat disappointed by the surface-level topics Bryon Powell covers. He’s trying to reach as many people as possible, so by necessity he can’t be overly detailed. You’re going to get a taste of the things you’ll likely encounter when you start running ultras; that’s Powell’s goal, and he achieves it here. And in Powell’s defense, I don’t think any ultra training guide is going to satisfy certain runners because what they’re searching for is the panacea to ultras. The secret is that there is no secret. Every potential problem that crops up in a marathon, from blisters to chafing to hydration issues, gets multiplied many times over in an ultra. Throw in nutrition, trail running, night running, and sleep issues, and you’ve created a huge challenge for any athlete. And there’s no one book that will help you overcome these challenges. You have to just run the distances and learn from experience. Powell says as much. He basically writes that he can help speed up the learning curve but there’s no substitute for experience, no magic pill that will prevent the lowest lows of mile 70. Take Powell’s advice and put it into practice. Ultras themselves are as idiosyncratic as the people who run them. One person may be struggling at the same time another is doing great, and that same person might crush one 100 miler and DNF the next. The real secret to the 100 mile seems to be the mental angle—how to stay positive and keep moving forward—and I think that part is individual to each person. You’ve got to figure that out for yourself. But if you want some great hints on how to dress for rainy weather, how to prevent blisters, how much to run in training, etc., then read this valuable book.
1 review
January 1, 2012
Relentless Forward Progress A Guide to Running Ultramarathons by Bryon Powell

I read this book with a highlighter pen. You might be wondering why someone who has experience running ultras already is doing reading this book, but I've been learning that you never quit learning to run and I learned from the book. I really enjoyed it.

The book starts out talking about the ultramarathon, what it is and why you should run one and when is a good time to attempt one. The book goes on to talk about training pace, what your weekly mileage should before attempt to train for an ultra, the 10% rule, speaks a lot on speed training and how and why speed trainin
is not necessary for an ultra, recovery, tapering, cross training, burnout, over-training, heat and cold training, altitude training, course specifics-road running, trail running, running up or down hills, has training schedules for a 50K through a 100 miles and talks a little about each distance, it even talks about staying safe on the trails, hydration and electrolytes, fueling, nutrition, injuries, feet care, choosing your first ultra, race day strategies, bare foot running, ultramarathon gear and other extreme adventures. The book also has a lot of neat passages from experienced ultramarathon runners.

You can order his book here: http://www.amazon.com/Relentless-Forw...
Profile Image for Sebastian.
174 reviews9 followers
August 20, 2013
"Not an ultrarunner yet, but..."

I am 39-years-old and until two years ago I never really liked running. Then I got into triathlons and since running was my weakest of the three sports I started focusing on it. Then I started liking it, then loving it, and now I run six days a week and a total of 45-50 miles. I am currently training for a marathon and when looking at what to do next I started to seriously look at ultrarunning. Some people think I am crazy, but I have been called that before, so I don't care.

I usually like to read about new endeavors I am undertaking, so I did some research and came across this book. I am truly happy I did! There is a huge amount of useful information, from how to approach running on trails including what to keep in mind and what you need to have at hand, nutrition and fueling, gear, and of course training plans among many other tidbits of extremely useful information.

After reading this I moved from the "I really would like to do this" column to the "I am doing this" column. I also appreciate how much information the author provides in the irunfar website. You can clearly see how much he loves the sport and his passion for sharing it with others. Last weekend I followed their coverage of the Leadville 100 and it was extraordinary and inspiring.

If you are considering going long, you would be wise to get this book.
Profile Image for Erin.
573 reviews1 follower
November 23, 2018
As someone who has completed a dozen or so half marathons and two marathons, I was hoping this book would provide some good tips on transitioning to ultramarathons.

While there are some interesting sections in the book, overall I felt like this is probably a good introduction for someone completely new to running as opposed to a runner transitioning to ultramarathons. A lot of the information in the book was pretty basic to me.

To be fair, I already belong to several ultrarunning Facebook groups and follow many ultrarunners on Instagram. So some of the information in the book I had already picked up from those sources.

I will say that the best part of this book are the training plans. It is sort of difficult to find solid training plans on the internet and the ones provided in the book seem pretty good. I will be using them in the future.

Overall, this book can be helpful, but honestly? I would suggest doing research online and then joining a few ultrarunner groups on Facebook. But that's just me.
3 reviews1 follower
July 10, 2017
Awesome good for anyone training for their first ultramarathon. Page after page, it becomes apparent that this book is a labor of love and not some Rodale Press revenue generating machine. It is full of insights & advice based on real-world experience putting on foot in front of the other for miles & miles. There is no fluff in this book. Not a single word wasted. This book is a diamond in the rough. I don't understand why it isn't more popular.
Profile Image for Beth.
443 reviews10 followers
March 9, 2013
Awesome inspirational book on ultra running. Powell uses his own experience and previously published articles to talk about what is is really like to run an Ultra. This will be a go to reference as I train for my first ultra. Perhaps I will run in 2013, more likely 2014. Well written and well referenced.
16 reviews1 follower
November 28, 2017
Amazing for anyone exploring to push their limits. Features simple and effective training plans.
Profile Image for David.
1,437 reviews10 followers
October 15, 2024
Maybe this book would have been useful when it was first published, but it's hard to recommend in 2024. Although targeted at runners who have successfully completed at least a marathon or two and have run 30+ miles per week for the past 6+ months, most of the advice is more suited for people thinking about running their first 10k. The chapters are short, and the information quite basic. Rather than delve into any useful details, the book instead refers the reader to other books on the topic, which begs the question of why bother with this one.

It also appears to have been hastily compiled from previous articles, including a bunch of contributions by others. In fact, a good deal of the info in the book appears on the author's excellent website (https://www.irunfar.com/ultramarathon...), including links to the references and other sources of additional information, which is likely going to be more useful for most runners, who have particular needs or interests.
730 reviews
May 23, 2023
I'd recommend this more so for someone new to longer distance running (marathon-ish), but even if you haven't done an ultra I'm not sure that there's a ton in here that you wouldn't already be aware of. Maybe some new tips, but at least in my experience they're covered in more depth in other sources out there.

That said, if you haven't trained for a marathon before and are considering going to the ultra distance, probably a good overview or initial exploration before looking at other resources, to get you started.

Training plans offer a good amount of flexibility and customization for amateurs' busy lives, but don't provide detailed per-workout guidance. In this case it's maybe the opposite - the training plans might be better for someone who has followed a detailed training plan for a marathon and done enough long distance running to be comfortable improvising or designing their own plan's details, and less useful for someone who hasn't gone beyond a half marathon before.
Profile Image for Dani.
16 reviews
April 12, 2019
Really good, comprehensive overview of the many facets of ultra-running. I wish I had read this before my first ultra last year, I would have been way less anxious about it! Crazy how a sport that seems so unapproachable when broken down into logical components, is super attainable and FUN. My only critique of this book is that gender descriptions are strictly his/her and while probably wasn't intentional, excludes non-binary folk. Also, adding a section about menstrual cups and other ways to deal with periods for long stretches in the woods would be beneficial for those of us with monthly cycles. It's a real thing we have to deal with and not including it in the book perpetuates the gender imbalance in ultra-running. All in all I loved this book and will return to it before future races!
Profile Image for Vėjas Galvoje.
164 reviews11 followers
August 7, 2018
Jei ieškai knygos, kuri trumpai ir koncentruotai papasakotų apie tai kas yra ultra maratonas ir kaip jam pradėti ruoštis ir galbūt pasiruošus jį įveikti, tuomet ši knyga tau. Bet jei nori daugiau pasigilinti į tai kas vyksta su žmogaus organizmu ultra maratono metu, kokia galėtų būti įvairi pasiruošimo taktika ir t.t., tuomet reikėtų rinktis kitą knygą arba netgi knygas.
Bryon Powell yra www.irunfar.com įkūrėjas ir pagrindinis veikėjas, taigi patarčiau pradžioje pasiskaitinėti būtent šį puslapį, nes ten tikrai daug informacijos ir netik Bryan'o, bet ir daugelis elitinių ultra trail bėgikų ten rašo savo įžvalgas ir patarimus.
Profile Image for Robin.
303 reviews5 followers
February 17, 2020
Nice summary of not just ultrarunning, but trail running in general. I loved the Forward and have asked my husband to read it so he can understand why maybe running far isn't crazy.

At one point, the author wrote a couple of pages about general information for crew, and then mentioned he gives his own crew an 8-page document of instructions. As someone with zero ultra experience, it's those 8 pages that would have been really interesting to read. Still, I took plenty of notes, especially in the first few chapters, and may use the training plan in the future.
Profile Image for Jill .
91 reviews13 followers
June 1, 2018
This book is a pretty broad overview of ultrarunning. It defines the sport, it outlines all the basics from gear to injuries that come from greater distances. I liked all of the essays sprinkled throughout the book from various ultrarunners. I don't know that I learned a great deal from this book, since I've been around ultras for a long time now, but I did find it an enjoyable and thorough read.
Profile Image for K.
1,058 reviews6 followers
June 2, 2018
On the one had, I’m disappointed that I didn’t read this before my ultramarathon last year. It provides a ton of good information about preparing for and running ultras. At the same time, ignorance is bliss. I think if I had read this, I wouldn’t have taken the plunge. But that is just me, I handle stress better as it comes rather than worrying about it beforehand. Not that I wasn’t prepared but rather, this book prepares you for all the worst case scenarios and I just didn’t need that.
252 reviews2 followers
August 9, 2023
I’m at the point of racing 10 milers on trails. I’ll soon push that to a 25k trail race to end my season. It seems the information in this text is perfect for the stage of growth I’m in. My goal is to run an ultramarathon on trails before I turn 50. Got 8 years to go! The narratives in this are helpful and inspiring. Will have to reread several times in order to get all the information it contains. Which is good. Because training and building endurance takes time.
Profile Image for Marika Lenee Kerr.
367 reviews3 followers
October 27, 2017
A couple ultrarunners recomended this book. Finished this in time to start my training for a 50 miler. This book gives a lot of information on gear, nutrition and provides training plans to start training for your first ultramarathon. Im glad there are books out there to help guide us with crazy goals like this.
Profile Image for nukie19.
579 reviews2 followers
August 31, 2018
This is a great book for ultra runners - read once from cover to cover to get all the good info and then keep it handy for reference. Great training plans included for 50k to 100mi distances, with advice for running all sorts of other types of races.
Profile Image for Andy Parkes.
426 reviews9 followers
April 21, 2020
Very good!

If the thought of getting into Ultra running has ever crossed your mind this is a great place to start
Lots of practical advice without being overwhelming as there is a lot to consider
31 reviews1 follower
April 13, 2021
This books discusses a wide variety of useful topics in ultrarunning. For someone who has experience with long-distance running, a lot of the info is basic. Also, the book hardly even mentions the benefits of strength training with improving running economy and preventing injuries.
Profile Image for Lân Nguyễn.
50 reviews33 followers
May 30, 2021
Một cuốn sổ tay tổng hợp các bài viết về các chủ đề khác nhau về chạy siêu dài. Là một cuốn sách khá ngắn gọn nên đọc để có cái nhìn tổng thể về ultrarunning, trước khi đọc những cuốn sách chi tiết hơn.
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