The 42nd Marine Corps Marathon and MCM 10K will bring a bevy of road closures to Arlington County this coming Sunday (Oct. 22).
Opening ceremonies for the races begin at 6:30 a.m., with the wheelchair race starting at 7:45 a.m. and the marathon and 10K beginning at 7:55 a.m. Around 30,000 people are expected to take part in the races, which run through parts of Arlington and D.C.