Sunday, October 1, 2023 • Ann Arbor, MI • Course Map
Set for its 12th annual running here at the home of the University of Michigan, the Probility Ann Arbor Marathon, Half Marathon, 10K & 5K runs along a loop course that starts and finishes on the university campus and features views of the city’s downtown as well as stretches along the winding Huron River.
If you’re a college football fan, the starting line is likely to be quite familiar to you — it’s near the University of Michigan Wolverines football stadium on Main Street, also known as the “Big House.”
The race begins along 5th Avenue, just north of the stadium. From there, the course for the full and half marathon share the same route
Shortly after the first mile, those running the half marathon turn right to head south on State Street, where they’ll run an out-and-back stretch south and then north again on State before turning right again onto University Avenue.
Those running the full skip the State Street turn and instead head east on University, and then join Geddes Avenue for a stretch that takes them past the Forest Hill Cemetery and Nichols Arboretum.
Runners in the half marathon head back along University through downtown Ann Arbor, where they’ll run a long, out-and-back stretch (with some hills), which turns more residential the further away you get from downtown.
The next stretch of the race brings runners into the second half of the half marathon, along South University Avenue and then south on State Street. Runners cross the finish line on Main Street, between Liberty and William Streets.
Race Weather & Climate
Nestled along the banks of the Huron River in southeastern Michigan, about 45 miles west of Detroit and roughly 240 miles east of Chicago, Ill., Ann Arbor typically sees mild weather in October with daily temperatures ranging from the low 40s to the high 60s.
On race day (Oct. 1), the average low is 42ºF and the average high is 56ºF.
- 2022 Results
- 2021 Ann Arbor Half Marathon Results
- 2019 Ann Arbor Half Marathon Results
- 2018 Ann Arbor Half Marathon Results
- 2017 Ann Arbor Half Marathon Results
- 2016 Ann Arbor Half Marathon Results
- 2015 Ann Arbor Half Marathon Results
- 2014 Ann Arbor Half Marathon Results
- 2013 Ann Arbor Half Marathon Results
- 2012 Ann Arbor Half Marathon Results
- $96 – $125 for the half marathon
- $110 – $150 for the full marathon
- $250 – $320 for the full marathon relay
- $44 – $70 for the 10K
- $35 – $60 for the 5K
- $40 – $50 for the virtual race
To reserve your spot in the 2023 running of the Probility Ann Arbor Marathon, Half Marathon or 5K race, register online at Runsignup here.
Official Race Website
Ever run in the Ann Arbor Half Marathon? Share your impressions here, or post your review in the Comments below.