The Denver Colfax Marathon is largely an out-and-back on Colfax. Stay on one side of the course to avoid getting trapped. Spectators can see runners twice from the Capitol area.
Best places to stand
Official and local guides highlight Empower Field at Mile High (early and later), Sloan's Lake, the Colorado State Capitol (miles ~2.5 and ~24.5), 17th Avenue, and the City Park finish. Stay south of Colfax or north of 17th depending on the stretch.
- Early/mid: Empower Field and Sloan's Lake.
- Double look: Colorado State Capitol.
- Late: 17th Avenue.
- Finish: City Park / Ferril Lake.
Getting there
I-25 stays open. Do not try to cross the course. Use the official directions rather than GPS once closures start. Free RTD rides with a race bib.
Where to meet
Agree on a landmark at the City Park finish outside the chute. Cell service can lag.