Hal Koerner
Hal Koerner's most popular book is Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond with 13 saves and an average rating of 4.
Hal Koerner's most popular book is Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond with 13 saves and an average rating of 4.