The Probility Ann Arbor Marathon offers a full marathon, half-marathon, 10K, and 5K.  The full marathon can be run as an individual or as a 4-person relay team.

All events start and finish in view of one of Ann Arbor’s most memorable landmarks, The Big House. Participants run through downtown Ann Arbor, then wind their way through the city’s streets and parks as well as the University of Michigan campus. The marathon and half marathon courses also encompass stretches along the Huron River and Gallup Park and through Nichols Arboretum before returning to campus and downtown. The full marathon is two loops.

The 10K is a true trail running going through Nichols Arboretum including the infamous “Hill”!

The 5K is a beautiful run through The University of Michigan’s campus with an exciting finish in view of The Big House!


USATF certified half and full marathon courses
Boston and New York Marathons Qualifiers
Road Runners Club of America Championship Event for Michigan
Endorsed by the Michigan Fitness Foundation
The 5K, 10K, and half marathon events in the Probility Ann Arbor Marathon are walker friendly!


Four-Person Teams • Two Transfer Points
Distances:  7.05 + 6.05  + 7.05 + 6.05 = 26.2
Exchange points at Gallup Park and the Start/Finish area- more details on relay logistics coming soon!


October 24, 2021 (Sunday)
26.2 miles
Solo Road
Marathon Relay
October 24, 2021 (Sunday)
42.195 kilometers
Relay Road
Half Marathon
October 24, 2021 (Sunday)
13.2 miles
Solo Road Timed
October 24, 2021 (Sunday)
3.1 miles
Solo Road
October 24, 2021 (Sunday)
6.2 miles
Solo Road
The information about this race is based on information provided by the organisers or found on the official website of the event. Always check the official website for up-to-date information. If you have noticed any mistake, let us know at [email protected]


2015 start
News Results

Results 2017: Probility Ann Arbor Marathon

Marathon John Hill outpaced more then 315 runners to win in 02:30:37. He bested Parker Latshaw who crossed the finish line 22 minutes 2 seconds behind him. Akira Nishimura got the third place in 02:54:01. In the women’s race, it was Nicole Monette who took the top spot in 03:10:57 , ahead of Myrranda Adams (03:11:34). Rounding out the top three
Probility Ann Arbor Marathon
Jean-Loup Fenaux | 28 Mar 2017 17:33

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