Metro buses will detour on several routes this weekend.

• Routes 9S and 23A will detour from 6 to 8:45 p.m. on Friday, around Crystal Drive between 12th and 27th streets in Arlington for the Crystal Run 5K

Routes 90, 92, 93, A42, A46, A48 and P6 will detour from 8 p.m. Friday to noon on Saturday, due to the District Department of Transportation’s 11th Street bridge construction project

Route G2 will detour from 7 a.m. to 7 p.m. on Saturday, around P Street between 18th Street NW and Dupont Circle for road construction.

Routes 32, 34, 36, 54, 64, 70, 96, P6, S2, S4 and V8 detour from 5 a.m. to 1 p.m. on Sunday, around Pennsylvania Avenue, NW, between 12th and 14th streets NW for the Race for Hope