Cummins Mill Race Half Marathon
Race Day Weather
Comfortable temps, big temp swing
Starting at 61°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temps will climb significantly to 77°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 67% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Cummins Mill Race Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Mill Race Half Marathon covers 13.1 miles on the Saturday of race weekend, starting and finishing in downtown Columbus, Indiana. The course follows smooth city streets and shaded park trails past the architecture the city is known for, with minimal elevation gain. It is a flat, fast distance suited to personal-best attempts.