For bikepacker and ultra-long-distance racer Lael Wilcox, taking on the Arizona Trail—800+miles of desert singletrack—is a challenge unlike any other, and it will test her to the core.

This is one of a series of three short films featuring the stories of people connected to three trails: The Appalachian Trail, Arizona Trail and Bay Area Ridge Trail. Learn more about how Every Trail Connects at rei.com/trails