Hal Koerner's Field Guide to Ultrarunning - Autographed Copy Mount to Coast It cushions long trail races

It cushions long trail races while maintaining highly responsive speed for tempo runs and strategic surges

constructed from shatterproof polycarbonate compound

The guide offers three detailed training plans to prepare for 50K

while the Desert colorway looks just as good on town streets as it does on the trail

Training for an Ultramarathon

Hal Koerner's Field Guide to Ultrarunning - Autographed Copy Mount to Coast It cushions long trail racesTraining for an Ultramarathon, from 50K to 100 Miles and Beyond Hal Koerner with Adam W. Chase Ultramarathon doesnt leave much room for mistakes. Dont learn the hard wayget a jump on training for an ultramarathon with Hal Koerners 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. Hal Koerner is among Americas best ultrarunners with