The Inferno 5K, 12K & 25K Can You Beat the Heat? Get ready to turn up the heat at one of the hottest races of the summer! The Inferno 5K, 12K and 25K is coming to Harns Marsh in Lehigh Acres, FL on again Saturday, Saturday July 18th, 2026 — and we’re daring you to take on the sun, the sweat, and the Florida fire! The 5K is for everyone but the 12K and 25K are designed for endurance athletes and heat-hardened runners, this race pushes limits with gritty summer miles through Florida's sun-soaked terrain. This is your chance to prove you can go the distance — and handle the heat. Race Day Details: Location: Harns Marsh, Lehigh Acres (Lee County, FL) Start Time: 7:30 AM ♂️ Distance: 5K,12K or 25K Terrain: Flat and fast — but the real challenge is the heat and the sun! Cut Off Time: 12:00 PM (All races) - No Exceptions! Race Swag: Custom finisher medal for all participants Inferno T Shirt Awards for top overall and age group finishers Packet Pickup: Fleet Feet Fort Myers Friday, July 17th 2026 5:00 PM – 7:00 PM 5K Course: Click HERE! 25K: Click HERE! Dress light, hydrate early, and bring your sunscreen!
Coming Soon
5K: T-Shirt
12K: T-Shirt
25K: T-Shirt
| Distance | Price | Opens | Closes |
|---|---|---|---|
| 5K | $27.50 | Feb 4 | Apr 30 |
| $30.00 | May 1 | Jun 30 | |
| $35.00 | Jul 1 | Jul 18 | |
| 12K | $30.00 | Feb 4 | Apr 30 |
| $35.00 | May 1 | Jun 30 | |
| $40.00 | Jul 1 | Jul 18 | |
| 25K | $35.00 |
| Year | Finishers | Median Time | Fastest Time |
|---|---|---|---|
| 2025 | 129 | 41:13 | 18:36 |
Interested in this race?
| Feb 4 |
| Apr 30 |
| $45.00 | May 1 | Jun 30 |
| $55.00 | Jul 1 | Jul 18 |