2023 - Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk

Kids' "Marathon" (.262) and "Half-Marathon" (.131)

Kids 12 and under choose on race day to run .262 or .131. Finisher medals and post race treats for all!

Marathon (26.2)

U of M Student Marathon (students only, 26.2)

This division is for University of Michigan students only! Participants in this division will be awarded top 3 overall male/female/nonbinary, but will not be excluded from the general overall and age-group awards. ALL WHO REGISTER FOR THIS CATEGORY MUST SHOW U OF M STUDENT ID AT PACKET PICKUP.

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 (Mixed, Male, Female Categories)

Half Marathon (13.1)

U of M Student Half Marathon (13.1, students only)

This division is for University of Michigan students only! Participants in this division will be awarded top 3 overall male/female/nonbinary, but will not be excluded from the general overall and age-group awards. ALL WHO REGISTER FOR THIS CATEGORY MUST SHOW U OF M STUDENT ID AT PACKET PICKUP.

10K

U of M Student 10K (students only)

This division is for University of Michigan students only! Participants in this division will be awarded top 3 overall male/female/nonbinary, but will not be excluded from the general overall and age-group awards. ALL WHO REGISTER FOR THIS CATEGORY MUST SHOW U OF M STUDENT ID AT PACKET PICKUP.

5K

U of M Student 5K (students only)

This division is for University of Michigan students only! Participants in this division will be awarded top 3 overall male/female/nonbinary, but will not be excluded from the general overall and age-group awards. ALL WHO REGISTER FOR THIS CATEGORY MUST SHOW U OF M STUDENT ID AT PACKET PICKUP.

19-Mile Training Run

Training for an October or November marathon? This date fits perfectly for many planned 19 or 20 mile training runs. Train with 1000 of your closest friends, with aid stations, portable toilets, and fans along the way. This 19-mile training run is a combo of the Ann Arbor 10K and the Ann Arbor 13.1. You will earn all of the race swag, including the long-sleeved T-shirt, finisher's medal, and post-race food!  It will be the most fun you have had on a training run - ever!

U of M Student 19-Mile Training Run (students only)

This division is for University of Michigan students only! Participants in this division will be awarded top 3 overall male/female/nonbinary, but will not be excluded from the general overall and age-group awards. ALL WHO REGISTER FOR THIS CATEGORY MUST SHOW A U OF M STUDENT ID AT PACKET PICKUP.

Kids Race Free 5K (10 and under)

Kids 10 and under can sign up for the 5K for FREE once a Parent/Guardian has signed up for another event. Simply provide the Parent/Guardian's registration number when completing the Kids' registration questionnaire.

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!

Puma Pace Team - Marathon BY INVITATION ONLY

Puma Pace Team - 10K - BY INVITATION ONLY

Puma Pace Team - Half-Marathon BY INVITATION ONLY

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.