Hanna Park MTB — Jacksonville's 15 Miles of Sand Singletrack You Wouldn't Expect from Flat Florida

Florida is flat. Mountain biking should be a contradiction. But Kathryn Abbey Hanna Park, 450 acres on Jacksonville's Atlantic edge, hides 15 miles of rooty, twisty, sand-laced singletrack across three loops — the East Coast's surprise Florida MTB flagship. Here's how to ride it without getting humbled.