(AP Photo/Evan Vucci, File)

Metro says it will open rail stations at 5 a.m. Sunday, two hours earlier than normal, to accommodate crowds expected for the Credit Union Cherry Blossom 10-mile run, which starts on the Washington Monument grounds at 7:20 a.m. for elite female runners and at 7:30 a.m. for others.

Stations closest to the starting location are Smithsonian (Blue/Orange lines), L’Enfant Plaza (Green/Yellow/Blue/Orange lines), Metro Center (Red/Blue/Orange lines) and Archives (Green/Yellow lines).

The additional two hours of service will be paid for “through an agreement with event organizers,” Metro said.

The 10-mile run “will use a wave start again this year,” according to the race’s Web site. “Runners will be assigned to a color-coded starting corral based on previous race times. Colors on bib numbers will match starting corrals. There will be six waves of approximately 2,500 runners each. The waves will start in 3-5 minute intervals.”

Related: Tips for Cherry Blossom Festival visitors