The 48th annual Detroit Free Press Marathon, presented by MSU Federal Credit Union, is set to return from October 17-19, 2025. This renowned international event will see thousands of participants run a course that spans from Detroit into Windsor, Canada, crossing the Ambassador Bridge and returning via the Detroit-Windsor Tunnel.
The race weekend features a variety of events for all skill levels, including a full marathon, two half-marathons (the International and the Motor City), a marathon team relay, a 5K, and kids’ races. Festivities will also include the Health & Fitness Expo, held on Friday and Saturday at Huntington Place.
2025 Race Course Maps
Below are the official course maps for the main events.
Full Marathon Course
International Half-Marathon Course
Motor City Half-Marathon Course
Marathon Team Relay Course
5K Course
Detailed maps for all events, including the Kids Marathon, 1-mile run, and the finish line area, are available on the official Detroit Free Press Marathon website.
Road Closures and Travel Advisories
Motorists should anticipate significant road closures and plan for extra travel time during the marathon weekend. Key closures for Sunday, October 19, will begin as early as 4 a.m. Drivers are encouraged to park outside the course perimeter.
Major closures on Sunday include:
- Monroe Street: Closed from Randolph Street to the I-375 Service Drive.
- Northbound streets off Jefferson Avenue: Limited access north of St. Aubin Street.
- Southbound Grand River: Closed at Cass Avenue.
- Southbound Woodward Avenue: Closed south of Adelaide Street.
- Westbound Lafayette Street: Closed at Iroquois Avenue.
- Eastbound Fort Street (Corktown): Closed at Grand Boulevard.
- Southbound Lodge Freeway (M-10): Closed after Howard Street.
The Detroit-Windsor Tunnel will be fully closed to traffic from 6:15 a.m. to 10:15 a.m. on Sunday, October 19. The Ambassador Bridge will remain open but will have restricted traffic flow to accommodate runners.
Event Parking
Organizers recommend that participants and spectators pre-book parking to avoid delays. Reserved parking is available through the Detroit Free Press Marathon’s official SpotHero Parking Page.
