DENVER — The Colfax Marathon on Sunday will feature about 18,000 runners, officials said.
Colfax Avenue from Lakewood to Aurora and some other nearby streets will be closed beginning about 3 a.m. The closures should end around 1 p.m.
Interstate 25 will remain open and it will be the best route for driving north or south. Federal Boulevard and Interstate 225 will also be available for north/south travel.
The marathon and half-marathon courses might not be crossed to ensure safety for participants. Drivers are advised to avoid the area to get around expected delays.