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

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.

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.

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.

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.

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.

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.

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!

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!

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!

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!

Bring the kiddos along to packet pickup up at the Ann Arbor Family Fitness Festival on Saturday, October 5th and sign them up for the Kids Run .262 or Half Mile races, starting at 12noon.

Bring the kiddos along to packet pickup up at the Ann Arbor Family Fitness Festival on Saturday, October 5th and sign them up for the Kids Run .262 or Half Mile races, starting at 12noon.

Bring the kiddos along to packet pickup up at the Ann Arbor Family Fitness Festival on Saturday, October 5th and sign them up for the Kids Run .262 or Half Mile races, starting at 12noon.

Bring the kiddos along to packet pickup up at the Ann Arbor Family Fitness Festival on Saturday, October 5th and sign them up for the Kids Run .262 or Half Mile races, starting at 12noon.