Ann Arbor Marathon
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Trinity Health Probility Ann Arbor Marathon
The Trinity Health Probility Ann Arbor Marathon runs October 3 to October 4, 2026 in Ann Arbor, Michigan. The event marks the 15th running and includes a mix of in-person and virtual races, youth events, and relay divisions.
Distances and event types:
- Marathon 26.2 miles
- Half Marathon 13.1 miles
- Marathon Relay teams for Women, Men, Mixed, and 50+
- Climate Week 10K presented by the University of Michigan
- Climate Week 5K presented by the City of Ann Arbor
- Kids runs: Half Mile for ages 10 and under, and .262 mile for ages 8 and under
- Virtual Marathon, Virtual Half Marathon, Virtual 10K, Virtual 5K
- Invitation only Epic Pace Teams for select distances
All distance events start in downtown Ann Arbor. The course passes the University of Michigan campus and natural areas including the Huron River, Gallup Park, and Nichols Arboretum before returning to a downtown finish. The full marathon is USATF certified and serves as a qualifier for both the Boston Marathon and the TCS New York City Marathon. The Climate Week 5K and 10K involve the University of Michigan and the City of Ann Arbor and are described as focused on creating a healthier, more sustainable future for the community. Visit the organization's website for the most recent information.
