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To those about to run the Rock ‘n’ Roll Marathon this Saturday, we salute you. To those who aren’t, here’s what you need to know about transit and the associated road closures throughout all four quadrants of D.C.

The race starts on Constitution Avenue NW in front of the Smithsonian National Museum of American History and winds 26.2 miles (for the full marathon anyway) to RFK Stadium. This is a map of the course:

Whole roads along the course are closed from early morning into the early afternoon, though you’ll want to check the list for yourself as closures are rolling and vary by area. Notably, major corridors 14th, 12th, 10th, and 9th streets NW will shut to all vehicular traffic from 5:30 a.m. until 12 p.m. As for parking restrictions:

Metrorail will open at 5 a.m. on Saturday to accommodate runners. Metrobus service will be a little more complicated. North of Constitution Avenue, buses “will turn back at a point near a rail station, if possible, resuming their regular routes into Downtown D.C. as streets reopen,” Metro says. South of Constitution Avenue, “there will be no regular service from the start of the race until the runners clear the Downtown area.” Service will return “as streets become available.” You can expect delays on some three dozen routes.

Long story short: If you were planning to drive on Saturday morning, you might as well follow the runners’ example and get around on foot.

Update 03/09/16:

The race will also affect service along at least two Circulator routes, according to the District Department of Transportation in a release issued on Wednesday:

  • “The National Mall route will begin service at 10 a.m., instead of the scheduled 9 a.m. opening. The route will operate as normal after the delayed start.
  • Woodley Park – Adams Morgan – McPherson Square will be on detour with no service at stops north of 14th Street and U Street NW, between 7 a.m. and noon.”

DDOT adds that normal service will begin at noon or on a rolling basis. Other Circulator routes may experience delays.

Photo by Darrow Montgomery; map and screenshots via Rock n’ Roll Marathon