Geist Half Marathon

The Geist Half Marathon, 10K & 5K, presented by Meijer, returns for its 17th year on Saturday, September 13! Operated by the City of Fishers in partnership with Vision Events, the race showcases the beauty of Geist Reservoir with stunning water views, tree covered trails, and waterfront bridges. The Geist Half Marathon race series includes a 5K (3.1 miles), 10K (6.2 miles), and a Half Marathon (21. 0975km or 13.1 miles). All participants receive a race shirt, medal, and access to the post-race party. VIP registration is also available.

The 2025 Race Features:

5k (3.1 miles)
10K (6.2 miles)
Half Marathon (13.1 miles)
VIP registration
Team volunteer opportunities

The start/finish line is located on the north end of the Olio Road Bridge at Geist Reservoir at approximately 11300 Olio Road, Fishers, Indiana.

Volunteer Opportunities

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Volunteer Opportunities List
Volunteer Opportunity/Agency	Date/Time	Actions
Geist Half Marathon Course Marshall City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Gear Check Volunteer City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Parking Attendant Volunteer City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Course Entertainment City of Fishers	Is Ongoing	View Details
Geist Half Marathon Floater Volunteer City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Start Line/Runner Services Volunteer City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Bike Teams Volunteer City of Fishers	Multiple Shifts Available	View Details
Geist Half Marathon Packet Pickup Volunteer City of Fishers	Multiple Shifts Available	View Details