Detroit Marathon

Detroit Marathon

Detroit, Michigan, United States

Overview

The Detroit Marathon draws approximately 5,500 finishers on an urban road in Detroit, United States. The course starts and finishes in downtown Detroit. Mostly flat with climbs on the bridge and tunnel approaches.

Detroit Marathon is a certified 42.195 km (26.2 mile) marathon — the standard World Athletics marathon distance.

Detroit Marathon 2026 race day

The next Detroit Marathon is scheduled for Sunday, 18 October 2026 with a 7:00 am start. The certified course covers 42.195 km (26.2 miles) with 118 m of climbing on a mostly flat with gentle undulations layout.

Detroit Marathon course route

The Detroit Marathon is a loop starting and finishing downtown and uniquely crosses the U.S.-Canada border twice via the Ambassador Bridge into Windsor and the Detroit-Windsor Tunnel back. The bridge and tunnel are the main physical tests on an otherwise flat course, and spectators gather downtown, at the border crossings, and along the riverfront on both sides.

Detroit Marathon route map

Detroit Marathon course map and route

Official course map — view on race website

Detroit Marathon elevation profile

The Detroit Marathon course is mostly flat with gentle undulations over 42.195 km (26.2 miles). Runners cover 118 metres of climbing and 121 metres of descent, with a net descent of 3 metres from start to finish.

Entry requirements

The Detroit Free Press Marathon uses open online registration at freepmarathon.com for the October race. The field of roughly 5,500 finishers is allocated first-come, first-served with no ballot or qualifying standard. International runners cross into Windsor, Canada, mid-race, so a valid passport is required on race day.

Detroit Marathon course video

Race-day footage from the course to help you picture the route, crowds, and key landmarks on marathon day.

Detroit Free Press Marathon’s route includes big changes this year

Frequently Asked Questions

Is the Detroit Marathon a Boston Qualifier?
The Detroit Marathon is a Boston Qualifier. The Detroit Marathon holds a certified 42.195 km course that can be used for Boston Marathon qualifying times, subject to current Boston Athletic Association standards and the race's USATF (or equivalent) certification status in the registration year.
What is the Detroit Marathon elevation profile?
The Detroit Marathon has 118 metres of total climbing and 121 metres of descent over 42.195 km (26.2 miles). The course is mostly flat with gentle undulations, with 3 metres of net descent from start to finish.
Where can I find the Detroit Marathon route map?
This page includes a Detroit Marathon course map showing the full 42.195 km route from start to finish. The official course map is published at www.freepmarathon.com/course/. The international course crosses the Ambassador Bridge into Windsor, Canada, and returns via the Detroit-Windsor Tunnel.
How long is the Detroit Marathon?
The Detroit Marathon is the standard marathon distance of 42.195 kilometres (26.2 miles), certified to World Athletics rules. Starts and finishes in downtown Detroit.
What time does the Detroit Marathon start?
The 2026 Detroit Marathon starts at 7:00 am local time on Sunday, 18 October 2026. Arrive early for baggage drop and corral access — official race communications on www.freepmarathon.com/ confirm any last-minute schedule changes.
Does the Detroit Free Press Marathon cross an international border?
Yes — it is one of only a handful of marathons in the world where runners cross an international border mid-race. Participants travel from the US into Windsor, Canada through the Detroit-Windsor Tunnel and return via the Ambassador Bridge, making it a truly international event.
Do runners need a passport to run the Detroit Free Press Marathon?
No passport is required. Race organisers coordinate with US and Canadian customs authorities in advance, and runners clear a streamlined border check as part of the race. You will need to register with your nationality and provide government-issued ID details during sign-up.
What is it like running through the Detroit-Windsor Tunnel?
The underwater tunnel segment — passing beneath the Detroit River — is a unique and memorable mile of the race. The enclosed environment creates a surreal echo of footsteps and crowd noise, and emerging on the Canadian side to the Windsor skyline is a highlight for most runners.
When is the Detroit Free Press Marathon held?
The Detroit Free Press Marathon is held in October, typically on the third weekend, which usually delivers cool and comfortable racing temperatures ideal for a strong performance.
Is the Detroit Free Press Marathon course flat?
Yes. The course is mostly flat with gentle undulations totalling around 118 metres of climbing, making it a solid choice for runners targeting a personal best or a Boston Qualifying time.

Last updated 18 July 2026. Edition dates and course details are reviewed regularly.

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