The Crystal City Twilighter 5K Race on July 27 will shut down a number of roads in  Arlington.

The annual race will begin at 8:30 p.m. between 20th and 23rd streets on Crystal Drive in Crystal City.

Here is a map of the route.

Law enforcement and transportation officials have announced street closures and warn drivers to expect delays and consider alternative routes if possible.

The following streets will be closed from 6:30 to 11:15 p.m.:

  • Northbound and Southbound lanes of Crystal Drive between 23rd and 20th streets

The following streets will be closed from 8 to 9:45 p.m.:

  • All lanes of Crystal Drive between Route 1 and 23rd Street
  • Northbound lanes of Crystal Drive between 20th and 15th streets
  • One southbound lane of Crystal Drive between 20th and 15th streets
  • Northbound lanes of Potomac Avenue between Crystal Drive and the Potomac Yard movie theater
  • One southbound lane of Potomac Avenue between 33rd Street and the Potomac Yard movie theater
  • 33rd Street between Potomac Avenue and Crystal Drive

Authorities also warn that numerous parking facilities in the area will have access restrictions during the run.