Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond Analytics he honed his eye and

he honed his eye and exerted a harsh self-discipline

These are the stories of five ordinary women-Sarah Edwards

from finding solace in the echoing caverns of depression and loss

and stumbles across a mystery

Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond Analytics he honed his eye andHal Koerner's Field Guide to Ultrarunning offers practical training advice for ultramarathons from 50K to 100 miles and beyond. Written by renowned ultrarunner Hal Koerner, the guide shares practical insights, field tested habits, and race prep strategies to help runners prepare for long distance events. The book covers training plans, pacing, nutrition, gear, and the mental aspects of ultrarunning.