GrindFest Progression Run
Milwaukee, WI
Sat, Dec 26, 2026
In 67 days · Sat, Dec 26, 2026
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Saturday, December 26th, 2026
500 S 84th St., Milwaukee WI
See race page
22–34°F · low rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2025
35–41°F
rain
2024
34–41°F
dry
2023
35–49°F
rain
2022
2–19°F
dry
2021
25–37°F
dry
2020
16–29°F
dry
2019
34–55°F
dry
2018
28–38°F
dry
2017
-4–6°F
dry
2016
24–50°F
rain
Best months to race in Wisconsin →
About this race
Since 2013, runners from across the Midwest have gathered to celebrate the end of the year with a one-of-a-kind event: an indoor, last-person-standing progression run!
Hosted on the Pettit National Ice Center's 443m track, runners speed up every 3 laps (0.84 miles), until they can't go any faster. With two options for when to start progressing (~6:30 or ~6:10), runners keep running as long as they can hang with the ever increasing pace. When it's down to the final pack, The Bell will be rung and a 3 lap first-to-the-finish race to determine the top places is on.
GrindFest promises to be a blast for all, from runners to spectators, with prizes for the most creative and fastest teams, the athletes who run furthest in an ugly sweater, a prediction contest, and of course, the coveted Mom of the Year award.
Check out our website for more information.
Course map
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