Geist Half Marathon, 10K & 5K

The Geist Half Marathon, 10K & 5K is a September race series in Fishers, Indiana, centered on Geist Reservoir. Participants can select a 13.1-mile half marathon, a 6.2-mile 10K, or a 3.1-mile 5K. The longer races begin early in the morning, with the 5K starting soon after. The routes incorporate the reservoir area’s water views, tree-covered trails, and waterfront bridges. The setting distinguishes this event from a typical road race. The City of Fishers manages the race with Vision Events Management. The event is returning for its 17th running.