Traffic in Moraine State Park will be affected Aug. 19 and 20 for the Mighty Moraine Fall Multi-Sport Race, according to the Department of Conservation and Natural Resources.

On Aug. 19, traffic will be delayed throughout the day at the Pleasant Valley Beach area on the South Shore.

On Aug. 20, North Shore Drive will be one-way from 6 a.m. to noon during the bicycle portion of the triathlon. The one-way pattern will proceed west-to-east, starting at West Park Road and ending at Mt. Union Road.

Park rangers and traffic control personnel will be on hand during the event. Motorists should follow detour signs.