There's no better way to see the real Maine than by bike...and no better way to bike it than with this third edition of Howard Stone's 25 Bicycle Tours in Maine --updated, expanded, and featuring all-new maps. Ranging from half-day jaunts to multiday adventures, these tours take you down nearly 2000 miles of Maine's back roads--through weathered lobster ports, past blueberry barrens and gracious Colonial homes, around remote islands and lakes, up (and down!) scenic hills. Stone concentrates on "the roads less traveled...the route to take if you truly want to learn what Maine is all about." (Bates College Alumni Newsletter ). Included with each tour is total mileage; a detailed map; complete mile-by-mile directions; information on nearby bicycle shops, accommodations, and eateries; and the author's notes on the country you're biking through. Many tours include side trips, detours, and alternate routes to tailor the ride to your taste.
Found some great tours. In my opinion they might underrate difficulty for less experienced riders but for semi serious and serious bike tourers this is a great start. The one caution I’d add is that road conditions in Maine vary greatly from year to year so great roads when the book was written can be terrible three years later and vis versa. Not something that any author could be reasonably expected to anticipate.