The Inferno Challenge

About the Event

🔥 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,125K 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!

Races Offered

12k

Jul 18, 2026

straighten

Distance — 50K

terrain

Type — Running

timer

07:30

sell

$30.00

25K

Jul 18, 2026

straighten

Distance — 25K

terrain

Type — Running

timer

07:30

sell

$35.00

5K

Jul 18, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

07:30

sell

$27.50

Weather Overview

These values represent the 3-year monthly averages for July in Lehigh Acres.

Temp (°C)

Feels Like (°C)

thermostat 23.9° / 33.1°

wb_sunny 28.0° / 37.0°

Wind (km/h)

Humidity (%)

air 6.6 /

water_drop 80.5%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 23.9° / 33.1°

wb_sunny 28.0° / 37.0°

air 6.6 km/h

water_drop 80.5%

About Lehigh Acres

Learn more about the host city, Lehigh Acres.

Lehigh Acres is a census-designated place (CDP) in Lee County, Florida, United States. As of the 2020 Census the population was 114,287, up from 86,784 at the 2010 census. Lehigh Acres is part of the Cape Coral-Fort Myers, Florida Metropolitan Statistical Area. It is one of the fastest growing communities in Lee County.