Two consecutive Bridge Runs (1986 and 1987) were marred by illegal runners. In 1986, between 300 and 500 runners did not make the start, which had been delayed 30 minutes because of a vehicular collision on the Pearman Bridge (the only access to the start line) between two shuttle buses carrying runners to the start and an automobile 70 minutes before the scheduled start. They ran down the Pearman, through the cut between the two bridges, and started their run midway through the course, on the Grace.