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Hal Koerner's guide to running your first 50K, including key intensity workouts and a 16-week training plan
You'll never get close to the ultrarunner's 90-plus podium finishes, but his rules will help you run your best race.
Hal Koerner's guide to running your first 50K, including key intensity workouts and a 16-week training plan
You'll never get close to the ultrarunner's 90-plus podium finishes, but his rules will help you run your best race.