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Geode Challenge Races

Lowell, United States • 18 Oct 2025

Geode Challenge Races are annual trail races at Geode State Park in Danville, Iowa, offering 5K, 12K, and 25K. The 12K runs the beach-perimeter loop in the opposite direction, while the 25K doubles the loop for a longer challenge. Terrain includes dirt trails, rocks, sand, and hills, with about 800 feet of elevation on the perimeter loop.

Dogs are welcome on leashes. Finishers receive a geode; top male and female in each distance earn handmade plaques, and the Top Dog plaque goes to the first overall winner running with a dog. Proceeds benefit Friends of Geode.

Registration closes Oct 14. Visit the organization's website for the most recent information.

United States Iowa Lowell

Race information

Website Registration
25 km
1600 m+
25k (15.5 Miles)
12 km
800 m+
12k (7.75 Miles)
5 km
5k (3.1 Miles)
Visit the organization's website for the most recent information.
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