The Detroit-Windsor Tunnel and several heavily used roads in Detroit will be closed to motorists for part of Sunday for the 2025 Detroit Free Press Marathon.
Thousands of people are expected to take part in the full marathon, which runs through Detroit and Windsor, Ontario, Canada. There is also an international half-marathon and a 13.1-mile race held entirely within Detroit on Sunday.
Race organizers say the tunnel will be closed to all vehicle traffic from 6:30 a.m. to 10:30 a.m…