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 4A, 16B, 16F and 16J detour from 6:30 to 8:30 p.m. on Friday, around Knollwood Drive between Lake Street and Glenmore Drive and Glen Carlyn Drive between Knollwood Drive and Munson Hill Road in Falls Church for a church procession. 

• Routes 5A, 32, 34, 36, 54, 64, 70, P6, S2, S4 and V8 detour from 5:30 a.m. to 1:30 p.m. on Saturday, around Pennsylvania Avenue NW between 12th and 14th streets NW for the Race to Stop the Silence

• Routes G2 and G8 detour from 9 a.m. to 1 p.m. on Sunday around P Street between 7th and 11th streets NW.