Bolder Boulder Registrations Soar for 2026: What to Expect
Boulder, Colorado, is gearing up for the 46th annual Bolder Boulder 10K on Memorial Day, and this year's race is set to be one of the larges...
The Colfax Marathon will result in rolling road closures in Denver and Lakewood on Sunday from 5 a.m. to 1 p.m.
RTD bus and light rail routes will experience delays and closures, including the D-, H- and L-Lines.
The marathon route will still run down East Colfax Avenue, despite ongoing BRT construction.
Local businesses, like Learned Lemur, hope to attract foot traffic and boost sales during the marathon.
Why this matters: Understanding the closures and transportation impacts is crucial for residents. The marathon also presents an opportunity for businesses to recover from construction-related losses.
The Colfax Marathon, Denver’s only legit 26.2-mile foot race, is expected to bring both challenges and opportunities to the metro area. Road closures will be in place throughout Denver and Lakewood, specifically north of 29th Avenue, east of Colorado Boulevard, south of 14th Avenue, and west of Kipling Street. I-25 will remain open. Public transportation will also be affected, with delays and reroutes on multiple RTD lines. Despite the disruptions, the marathon offers a unique chance for businesses along Colfax Avenue to gain exposure and increase revenue, particularly as they navigate ongoing construction projects. Shops are planning special events and promotions to attract the thousands of people passing by.
For runners, the races include the Colfax 5k, Marathon Relay, Colfax Marathon, Half Marathon and Urban 10 Miler. Prime viewing locations for spectators include 14th and Larimer streets, Sports Authority Field at Mile High, Sloan's Lake, Rocky Mountain College of Art and Design, and Dudley Street and West Colfax Avenue.
Q: What are the key road closure times?
Road closures will be in effect from 5 a.m. to 1 p.m. on Sunday.
Q: Which RTD lines will be affected?
D-, H- and L-Lines will experience closures and reroutes.
Q: Where can I watch the marathon?
Popular viewing spots include 14th and Larimer streets and Sloan's Lake.
Plan your travel accordingly to avoid road closures and RTD delays during the Colfax Marathon.
Support local businesses along Colfax Avenue that may be impacted by construction.
Spectators can track runners via the website to find their favorite, mile by mile.
Consider using the W-Line and designated bus routes with a race bib for free rides between 6 a.m. and 2 p.m. Sunday.
Do you think the Colfax Marathon will provide a significant boost to businesses affected by construction? Let us know!
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