Relentless Forward Progress: A Guide to Running Ultramarathons

These BTBs, as we call them, are as much about time on the feet and time being out there as they are about mileage. You will learn what it takes to muster mental as well as physical energy when you think you have none left. You will also experience the caloric demands of hours of exercise and figure out how to eat and drink on the run when that mig

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