The Inferno Challenge

The Inferno Challenge is a summer running event held at Harns Marsh in Lehigh Acres, Florida. Scheduled for August 2, 2025, it offers three race distances: 5K, 25K, and 50K. The course is flat and fast, but the main challenge comes from the intense Florida heat and sun, testing endurance athletes and heat-hardened runners.

Participants receive a custom finisher medal and an Inferno T-shirt, with awards for top overall and age group finishers. Packet pickup is available the day before the race at Fleet Feet Fort Myers. Runners are advised to dress lightly, hydrate well, and use sunscreen. Visit the organization's website for the most recent information.