DENVER -- The Colfax Marathon is this Sunday and thousands will take to the streets during the 26.2-mile run through one of Denver's most famous arteries.
But if you're not participating, here's everything you need to know about the event:
The Colfax Marathon
Billed as the “ultimate urban tour,” the mile-high course takes runners on and off Colfax, through parks, neighborhoods, trails and downtown.
Participants will have a chance to enjoy amazing views of the Front Range, Confluence Park, Sports Authority Field at Mile High’s concourse and the Cherry Creek trail.
For those not participating, don’t worry – there’s an after-party event in City Park with live music, food and drink.
The event starts at 5:30 a.m. and will go until about noon.
The Colfax Marathon will start and end at City Park but the route will take runners all the way to Garrison Street near Crown Hill Park in Lakewood to the west, and up to Havana Street near Aurora to the east.
To view a full map of the course, including the 5K, click here.
Getting there, away from the race
Interstate 25 will be open and is the best option to for driving north and southbound to and from the Colfax Marathon.
Travelers are urged to stay away from Kipling Street on the west, 6th Avenue on the south, West 26th Avenue on the north and Havana Street to the east parts of town during the race, in order to avoid delays.
Best places to watch the Colfax Marathon
If you're not participating in the Colfax Marathon but would still like to watch the event, organizers have created a handy map with five different spectator locations.
You can find that map here.
What if I'm using the bus on Sunday?
More than a handful of bus routes will experience detours during the Colfax Marathon between 3 a.m. and 1 p.m. Sunday.
The following routes will be temporarily detoured in many areas, and will be allowed to cross the marathon route when possible:
0, 1, 6, 9, 10, 12, 15, 15L, 16, 19, 20, 24, 28, 30, 32, 38, 40, 43, 44, 48, 52, 65, 73, 76, 83L and light rail lines D, F and H.
Passengers are advised to give themselves more time to plan for their destinations. Signs will be posted at RTD stations and stops affected by the detours.