Firecracker 5K - Marengo

JUL
4
2026
Run underground where it's always 54 degrees. The Firecracker 5K in Marengo features a unique course that goes inside a cave-adjacent warehouse for two cool miles before finishing at a festival. Experience rolling hills, small-town charm, and a break from the summer heat.
Sat 4 Jul 2026
5 kilometers

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Event Details

The Firecracker 5K Run/Walk takes place on July 4th in Marengo, Indiana. The start and finish point is at the Marengo Boys and Girls Club on 177 South Second Street.

Course Description

The course begins at the Boys and Girls Club and proceeds down State Route 64, passing Marengo Cave. At the 1 mile mark, runners enter an underground section. This indoor portion covers about 2 miles of the total course inside a warehouse with a constant temperature of 54°F (12°C). The underground section features good lighting, hairpin turns, and a smooth, flat, offroad-like terrain. The route then doubles back, exiting to finish near an outdoor festival. The above-ground sections include rolling hills and pass through the small town.

Event Features

The event is noted for its unique underground running environment, which provides a cool alternative to typical summer heat. Visit the organization's website for the most recent information.

5 km
Firecracker 5k Run/walk