The Nation's Triathlon event will affect traffic Sunday morning in Arlington.

Due to road closures in Washington, Chain Bridge will be closed to all traffic from 6 a.m. to noon, according to an Arlington County news release. All northbound North Glebe Road traffic will be directed to Route 123.

The triathlon, now in its seventh year, benefits the Leukemia & Lymphoma Society and draws about 3,500 competitors. The event features a 1.5K swim in the Potomac River, a 40K bike course through the district and a 10K run through downtown D.C.’s historic landmarks, according to a news release on the event.

To read more about the triathlon, visit its website.