According to the Marathon's web site,
Runners must cross the dam (approximately mile 17.2) by 11:30am. Runners that do not cross the dam before the cutoff will be asked to leave the course. The Ogden Marathon will provide transportation to the finish line for the runner's safety and security. The race begins at 7:00am, earlier starts will not be supported by the Ogden Marathon.Be sure to plan your morning driving route to avoid the more than 6000 runners. This will be among the first of a summer full of weekend running and biking events.