Ultramarathons don’t leave much room for mistakes. Don’t learn the hard way: get a jump on training for an ultramarathon with Hal Koerner’s Field Guide to

***Updated and expanded new edition*** An Updated, Interactive Guide to Take Your Running to the Next Level With 20 years of running and competing around the wo

An electrifying look inside the wild world of extreme distance running. Once the reserve of only the most hardcore enthusiasts, ultra running is now a thriving

Ready to Run an Ultramarathon? When you consider marathons, do you think, "been there, done that"? Like so many others, do you believe that humans were born to

Travis Macy summited glacial peaks in the French Alps, rappelled into vast limestone caves in China, and ran through parched deserts in Utah. Most famously, he