Glacial Trail 50
Greenbush, United States • 11 Oct 2026
Glacial Trail 50
The Glacial Trail 50 is a fall ultramarathon held Sunday October 11th, 2026, in the Northern Kettle Moraine State Forest with the start and finish at the Greenbush Town Hall / Fire Station, N6644 Sugarbush Road, Greenbush, WI 53023. The route departs Greenbush on a connector trail and then follows the Ice Age Trail for most of the out and back course.
Distances
- 50 mile
- 50K
Aid stations require runner check in and are stocked with HEED, water, and food. Stations are spaced about four to eight miles apart. There are one drop bag stations at mile markers given for each distance (50K at 13.3 and 17.7; 50 mile at 13.3 and 36.7). The race is cupless; runners must carry a refillable container. A reusable cup will be provided at check in.
Pacing by non entrants is not allowed. Crews may assist runners only at aid station locations. Providing aid outside aid stations or stashing supplies along the course is not permitted. Vehicles at aid stations inside the state forest require a Wisconsin state park parking pass; the start and finish are outside the state forest and do not require a park sticker.
Time limits are 12 hours for the 50 mile and 10 hours for the 50K. Entrants receive a choice of a sweatshirt or a blanket and post race food and beverages. Awards include custom medals and age category prizes for top finishers. Closest lodging and services are in Plymouth about seven miles east and camping is available in Kettle Moraine State Forest. Visit the organization's website for the most recent information.