Two races in the area will block off some roadways near campus temporarily.

The Sister Cities 5K race will start at 9 a.m. Saturday morning, impacting several roads around campus, according to a GW campus advisory.

Runners will use 19th, 20th, 21st, E, F, Eye streets and Pennsylvania and Virginia avenues, NW. A map of the course route is available here.

The race starts and ends at the intersection of 21st Street and Pennsylvania Avenue. A festival is scheduled to follow the race from 11 a.m. to 2 p.m.

On Sunday, runners in the Marine Corps Marathon will also create street closures near Foggy Bottom and Mount Vernon campuses.

Part of Foxhall Road near the Vern will be closed, and runners will make their way down Constitution Avenue, a few blocks from the Foggy Bottom campus. A map of the full course is available here.

As noted in an e-mail advisory to students, the Vern Express will alter its schedule on both Saturday and Sunday.

Between  8 a.m. and noon Saturday and 6 a.m. and noon on Sunday, the Vern Express will likely bypass the stops on E Street, G Street, and in front of the Hall on Virginia Avenue.

The e-mail notes that alternate routes may be used and delays are possible.

The Fulbright Hall stop at 23rd and H streets will be the main pick up and drop-off stop in Foggy Bottom, and all Mount Vernon Campus stops will stay in use.