Ann Arbor Marathon

OCT
3-4
2026
A downtown Ann Arbor running weekend with marathon and half marathon courses, 5K and 10K Climate Week events, relays, kids races and virtual options.
3-4 Oct 2026
26 miles 13 miles 10 kilometers 5 kilometers

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Trinity Health Probility Ann Arbor Marathon (Ann Arbor, Michigan)

The Trinity Health Probility Ann Arbor Marathon is a multi-event running weekend held in downtown Ann Arbor. Events include road races, relay teams, kids runs, and virtual options organized by Trinity Health Probility.

All distance events start in downtown Ann Arbor and the marathon route passes the University of Michigan campus and natural areas such as the Huron River, Gallup Park, and Nichols Arboretum before returning to a downtown finish. The marathon course is USATF certified and serves as a qualifier for the Boston Marathon and the TCS New York City Marathon.

The event program includes a range of on-course and community-focused elements. The Climate Week 5K and 10K are presented with the University of Michigan and the City of Ann Arbor and are described as supporting a healthier, more sustainable future. Some kids races are offered free with a paid adult and may require a race confirmation number.

Distances and event types

  • Marathon - 26.2 miles
  • Early start option - Marathon
  • Marathon relay - 4 person teams, multiple divisions
  • Half Marathon - 13.1 miles
  • Half Marathon walking division
  • Climate Week 10K and Climate Week 5K
  • Kids runs, including half mile and .262 mile events
  • Virtual Marathon, Half Marathon, 10K, and 5K
  • Epic Pace Teams by invitation only

Location: downtown Ann Arbor, starting near 209 S Ashley St, Ann Arbor, MI. Visit the organization's website for the most recent information.

26 mi
Marathon
26 mi
Marathon Relay
13 mi
Half Marathon
13 mi
Half-Marathon Walk
10 km
Climate Week 10k
5 km
Climate Week 5k
Kids Run Half Mile
Kids Run .262
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