Geist Half Marathon, 10K & 5K
Indianapolis, IN
Sep 12, 2026
Indiana’s premier waterfront race is back! Operated by the City of Fishers in partnership with Vision Events Management, the Geist Half Race Series features three race distances; a fun, all-ages after party; and stunning views of Geist Reservoir. The Geist Half Race Series includes a family-friendly 5K (3.1 miles), popular 10K … MORE
Local Historical Weather (Sep 12):
| 2025 | 2024 | 2023 | 2022 | 2021 | |
| H (°F) | 86 | 88 | 73 | 65 | 88 |
| L (°F) | 52 | 56 | 59 | 55 | 69 |
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Not back-of-pack Friendly
Race swag was great, course was fine, and communication from Aprill was great, but could be better from others in the organization. Site says walker friendly, and has a 4-hour … MORE
Race swag was great, course was fine, and communication from Aprill was great, but could be better from others in the organization. Site says walker friendly, and has a 4-hour course limit, but beware those that finish close to the time limit will not get to enjoy beer and VIP amenities. They were cleaning up when we got to the beer and VIP tents even though we finished well within the time limit.
Good local hilly race
By Indiana standards, this is a hilly course, so probably not a target for PR'ing. Not a very big field of runners, and crowds are sporadic due to the nature … MORE
By Indiana standards, this is a hilly course, so probably not a target for PR’ing. Not a very big field of runners, and crowds are sporadic due to the nature of the course (weaving through neighborhoods and over bridges around Geist Reservoir). Going forward, as a local, it’s one that I’ll run again if I’m available, but it’s not one I’ll center my plans around.