Mammoth-On 2025: America’s ONLY Cave-Hike-Bike Tri-Event

Friends of Mammoth Cave National Park is hosting Mammoth-On, a unique opportunity to experience a 2-mile cave tour, 2-mile hike, and 18-mile bike ride all within Mammoth Cave National Park. Check-in and on-site registration begins outside Mammoth Cave Lodge at 7:30 a.m., followed by the first leg at 8:15 a.m. As a non-timed event, everyone is encouraged to take part at their own pace.

Find registration online at www.mammothfriends.org. Sign-ups are encouraged by September 7 to ensure a participant t-shirt.

Mammoth-On is hosted by Friends of Mammoth Cave, the official philanthropic partner of Mammoth Cave National Park. The group helps fund projects and programs that protect, preserve, and enhance the park’s natural and cultural resources, as well as educational opportunities for classrooms.