Hal Koerner’s Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond
Ultramarathons don’t leave much room for mistakes. Don’t learn the hard way: get a jump on training for an ultramarathon with Hal Koerner’s Field Guide to Ultrarunning, a comprehensive handbook to running 30 to 100 miles and beyond, written by one of the most experienced and recognized athletes in the sport.
Read More …. Hal Koerner’s Field Guide to Ultrarunning