Sat, Oct 3, 2026

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

Ann Arbor, MI

Registration openAnnual since at least 2013

MarathonHalf Marathon10K5K0.5 Miles0.26 Miles10K5K

Entry is $50 now and rises to $55 after Aug 7, 2026, so registering before then saves $5.

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

The course starts in downtown Ann Arbor and moves through the University of Michigan campus before reaching the Huron River corridor, Gallup Park, and Nichols Arboretum. Longer distances get the most of the route; shorter ones stay closer to downtown. All distances finish in the same downtown area, so there is a crowd there regardless of when you come through.

Marathon, half-marathon, and relay runners must pick up packets at the expo the day before, held at a community center on the south side of the city. The expo is open to the public and includes vendors, speakers, and a walkthrough of the route led by race staff. Shorter-distance runners have the option of picking up on race morning instead.

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Finish-Time Stats

Going by the 2025 results, this is a decent-sized field, with a competitive front end and a big recreational middle.

13.1 Miles · 2025 results

810finishers

1:12:01winner

2:07:11median

4:13:28cutoff

The Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk has been held every year since at least 2013. That is as far back as RunSignup's records for this race go, so it may well be older.

Where Would You Finish?

Enter a finish time to see where it lands against the most recent 13.1 Miles results.

Median

See how your time stacks up nationally →

How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.

Distances & Start Times

26.2 Miles10/4/2026 08:00$135

26.2 Miles10/4/2026 08:00$270

13.1 Miles10/4/2026 08:00$120

10K10/4/2026 09:00$65

5K10/4/2026 09:15$50

Kids Run Half Mile (10 and under only, free with paid adult) - must enter race confirmation number10/3/2026 11:00Free

0.5 Miles10/3/2026 11:00$30

Kids Run .262 (8 and under only, free with paid adult) - must enter race confirmation number10/3/2026 11:00Free

0.26 Miles10/3/2026 11:00$30

26.2 Miles10/4/2026 08:00$60

13.1 Miles10/4/2026 08:00$60

6.2 Miles10/4/2026 08:00$40

3.1 Miles10/4/2026 08:00$40

26.2 Miles10/4/2026 08:00Free

13.1 Miles10/4/2026 08:00Free

10K10/4/2026 08:00Free

Epic Pace Team - 5K - BY INVITATION ONLY10/4/2026 08:00Free

Going for a Time?

Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.

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Common Questions About the Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk

Will I finish last at the Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk?

Almost certainly not. Half the 13.1 Miles field finished slower than 2:07:11, and the last recorded finisher came in around 4:13:28, so there is a long tail of runners behind the middle of the pack. Most fields are far slower than people expect.

Is the Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk a good first 13.1 Miles?

With 810 finishers there are runners at every pace, so you are never out on your own. There is no qualifying time, and the finish-time spread above shows how varied the field really is. If it is your first 13.1 Miles, that spread matters more than the winner's time.

How competitive is the Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk?

The 13.1 Miles winner ran 1:12:01 while the median finisher took 2:07:11. That spread points to a mixed field, with a competitive front and a big recreational middle.