The Inferno Challenge Harns Marsh
- Date
- July 18, 2026
- Distance
- 5K · 12k · 25K
From the Organizer
🔥 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:
25K:
Dress light, hydrate early, and bring your sunscreen!
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More running races in FL
Frequently Asked Questions (FAQs)
- What is The Inferno Challenge Harns Marsh?
- The Inferno Challenge Harns Marsh is a running event held in Lehigh Acres, FL. Learn more about the different endurance sports here.
- When and where is The Inferno Challenge Harns Marsh?
- Saturday, July 18, 2026 in Lehigh Acres, FL at 3399 38th Street W, Lehigh Acres, FL. Check the official event page for exact start times and wave schedules.
- How do I register for The Inferno Challenge Harns Marsh?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
The Inferno Challenge Harns Marsh
Jul 18, 2026