The average load for a pack mule is a little over 200lb, with all but 160lb of this being the pack saddle; larger mules can carry up to 320lb in total, smaller ones 120lb. They move at a speed of 2½–3½ miles per hour and can cover around 15–20 miles a day on good surfaces; a day’s journey in mountainous country with bad roads was 10–12 miles loaded, 15–16 miles unloaded.
