Trailbreaker Marathon
Trailbreaker Marathon connects Waukesha's paved Glacial Drumlin and Fox River trails on a flat certified spring course with generous support access.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 21, 2026.
Quick facts
- Flat USATF-certified marathon course
- Glacial Drumlin and Fox River trails
- April 4, 2027 marathon entry
- 2026 Trailbreaker full results
About the Trailbreaker Marathon
This Wisconsin event offers the individual full alongside half, ruck and adaptive divisions. Marathoners receive their own entry option and result set within the wider race weekend.
Course
The mostly paved route follows the Glacial Drumlin and Fox River trail system over a level profile. Long straight sections encourage even splits, while early-spring wind can become the chief resistance.
Race-day weather
Late March and early April in Waukesha may bring freezing air, rain, snow flurries or mild sunshine. Trail exposure calls for layers that handle wind and changing temperatures.
Past Trailbreaker Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Sunday, April 4, 2027 | Upcoming | — |
| 2026 | Sunday, March 29, 2026 | Completed | Open results |
Trailbreaker Marathon FAQ
When is the Trailbreaker Marathon?
The 2027 Trailbreaker Marathon is on Sunday, April 4, 2027.
How do I register for the Trailbreaker Marathon?
You can register for the Trailbreaker Marathon at runsignup.com.
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