National Geographic Adventurer of the Year Jennifer Pharr Davis unlocks the secret to maximizing perseverance--on and off the trail Jennifer Pharr Davis, a reco

In 2011, Jennifer Pharr Davis became the overall record holder on the Appalachian Trail. By hiking 2,181 miles in 46 days - an average of 47 miles per day - she

Originally published in 2010 with the subtitle Epic adventures on the Appalachian Trail.

'A must read!' - Kevin Portman, IRONMAN Champion 'This is a guide to staying in endurance sports for the long haul!' - Kathryn Cumming, elite cyclist and coach

NATIONAL BEST SELLER A stunning, personal memoir from the astronaut and modern-day hero who spent a record-breaking year aboard the International Space Station�