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GrindFest Progression Run

location_on

Milwaukee, Wisconsin, United States

calendar_today 27 Dec, 2025

directions_run Running

About the Event

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.

Races Offered

Other

Dec 27, 2025

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Distance — Other

terrain

Type — Running

timer

-105 days remaining

Weather Overview

These values represent the 3-year monthly averages for December in Milwaukee.

Temp (°C)

Feels Like (°C)

thermostat -3.2° / 2.9°

wb_sunny -8.8° / -2.0°

Wind (km/h)

Humidity (%)

air 15.4 /

water_drop 74.9%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat -3.2° / 2.9°

wb_sunny -8.8° / -2.0°

air 15.4 km/h

water_drop 74.9%

About Milwaukee

Learn more about the host city, Milwaukee.

Milwaukee is the largest city in the state of Wisconsin, United States. The city's population is about 600,000 with about 1.6 million in the metropolitan area (2019). It is in the southeastern portion of the state on the western shore of Lake Michigan.