Sparta Half Marathon
Race Day Weather
Mild conditions, slight humidity
Runners will face temperatures rising from 64°F at the start to 67°F by finish, with average humidity at 68%. Light winds from the SW will be a non-factor. With the humidity, it's advisable to start conservatively and focus on hydration strategies to maintain performance.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Sparta 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 Sparta Half Marathon is an annual race in Sparta, Wisconsin, run as an out-and-back combining the flat, gravel Sparta-Elroy State Trail with rolling paved country roads outside town. The race starts and finishes at the Sparta Area Chamber of Commerce building and also offers 10K and 5K distances. Despite a 2026 relaunch on a new website and registration platform, course records referencing 2023 confirm this is an established annual event rather than a new one.
