Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk
About this race
THE PROBILITY ANN ARBOR MARATHON
Take to the scenic streets of Ann Arbor to help E-Race the Stigma with the 16th running of the Trinity Health Probility Ann Arbor Marathon. With a variety of running events that appeal to all ages and abilities, you’ll find that the Ann Arbor Marathon is your ideal fall race event, whether you’re walking your first 5K or running your 50th marathon.
RUN TREE TOWN.
All distance events — marathon, marathon relay, half marathon, 10K, and 5K — start in downtown Ann Arbor at 209 S Ashley St, Ann Arbor, MI 48104. Run through the vibrant streets of downtown Ann Arbor, then wind your way through the panoramic University of Michigan campus. The marathon, half-marathon, and 10K courses also encompass stretches along the Huron River and Gallup Park and through Nichols Arboretum before returning to campus and downtown. All races end with a spectacular downtown finish. The Ann Arbor Marathon course is USATF certified and serves as a qualifier for both the Boston and New York Marathons.
If you’re coming in from out of town, out of state, or out of the country — or even if you live in the Ann Arbor Area — you’ll enjoy discovering Tree Town USA! Ann Arbor features locally owned and operated restaurants and cafes, independent bookstores, theaters, art galleries, and museums (including the University of Michigan Museum of Art), all within reach of the Ann Arbor Marathon. Learn more at VisitAnnArbor.org!
E-RACE THE STIGMA
We are continuing our charity takeover!
In partnership with the Rotary Club of Ann Arbor we are committing all our fundraising efforts to organizations that help and support mental health and/or issues associated with mental health and play an active role in reducing the stigma surrounding mental illness. You will learn about them during registration, and we hope you will choose to support one or many to help E-Race the Stigma!
Pick your distance
Running
Kids Run Half Mile - 10 and under only
Bring the kiddos along to packet pickup up at the marathon expo on Saturday, October 11th and sign them up for the Kids Run .262 or Half Mile races, starting at 11am.
Kids Run .262 - 8 and under only
Bring the kiddos along to packet pickup up at the marathon expo on Saturday, October 11th and sign them up for the Kids Run .262 or Half Mile races, starting at 11am.
Marathon (26.2)
Early Start Option: Marathon (26.2)
Plan on taking more than 6 hours to finish? Choose our early start option when you register! Please note that packet pickup opens at 6 a.m. which is the same time as the early start option. This means that you will need to pick up your packet at the expo the day before the race. We will record your start time as 6 a.m. You will need to have a headlamp and any hydration that you will need before 8:00 a.m when the course officially opens. Remember that the course will be marked, but there will not be any police or volunteers on the course until 7:30 a.m. so you will need to follow traffic laws and it will be good to be familiar with the course. The course will close promptly at 2 p.m. At that time, if you are still on the course, you will need to move to the sidewalks. You, of course, may finish the race, but the finish area will begin cleaning up.
Marathon Relay (Women, Men, Mixed, 50+)
Half Marathon (13.1)
10K
5K
Virtual Marathon
Not able to make it to Ann Arbor on race day? Hold your own Probility Ann Arbor Marathon at the time and place of your choosing!
Virtual Half Marathon
Not able to make it to Ann Arbor on race day? Hold your own Probility Ann Arbor Half-Marathon at the time and place of your choosing!
Virtual 10K
Not able to make it to Ann Arbor on race day? Hold your own Probility Ann Arbor 10K at the time and place of your choosing!
Virtual 5K
Not able to make it to Ann Arbor on race day? Hold your own Probility Ann Arbor 5K at the time and place of your choosing!
Epic Pace Team - Marathon BY INVITATION ONLY
Epic Pace Team - Half-Marathon BY INVITATION ONLY
Epic Pace Team - 10K - BY INVITATION ONLY
Epic Pace Team - 5K - BY INVITATION ONLY
Walking
Half-Marathon (13.1) Walk
13.1-mile walk. This event is for walkers only, no runners! All participants will receive a time and a place, but no awards. You will need to be able to maintain a 30-minute-per-mile pace.
Typical race-day weather
Based on 14 years of Open-Meteo archive data for this event's race dates in Ann Arbor, plus the 3 days either side.
The sun rises at 7:34 AM and sets at 7:13 PM local time (EDT) in Ann Arbor on October 3, 2026 — 11h 38m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Results — Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk
Other races near Ann Arbor
Different organizers, within 40 miles, in the next three months
Turner's Trot Annual 5K Walk/Run
The Rat Race 5k Run/Walk
UM Swe Engineered to Run Charity 5k
Turkey Trails- Ann Arbor
🏃 Plan Your Next Race in Ann Arbor
Find upcoming events by distance:
- Ann Arbor 5K Races 27 races
- 10K Run Events in Ann Arbor 11 races
- Ann Arbor Half Marathons 6 races
- Ann Arbor Running Calendar 2026 37 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 37 Ann Arbor events
Spotted something wrong? Tell us and we'll fix it.