Several runners from Windsor, Ontario, were unable to participate in the Detroit Free Press Marathon after a shuttle service failed to return them from Canada. The Linq Tunnel Bus, which transports runners under the Detroit River, left them stranded at a bus stop.

The shuttle's driver attempted to return for a second load but found the tunnel closed 22 minutes before its scheduled 6:15 a.m. closure. The Linq Tunnel Bus apologized for the incident and is reviewing its communication protocols with passengers. Read more culture coverage.

Runners expressed frustration over the lack of information provided. The marathon organizers are investigating the incident and are open to hearing from affected runners, though no compensation has been announced. Related: Quebec City Marathon: Scenic Race and Fall Getaway.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.