Marine Corps Marathon Road Closures Map 2025. The marine corps marathon is back for its 49th year on sunday, bringing 30,000 registered runners from around the world, plus a slate of road closures. Local jurisdictions will reopen the roads as soon as event operations cease, with the mcm course officially closing by 3:05 p.m.

On sunday, october 27, 2024. At this time, the start line will close and no runners will be allowed to run the event due to safety and support concerns.