- What is the Denver Colfax Marathon elevation profile?
- The Denver Colfax Marathon has 100 metres of total climbing and 95 metres of descent over 42.195 km (26.2 miles). The course is mostly flat with gentle undulations, with 5 metres of net climb from start to finish.
- How long is the Denver Colfax Marathon?
- The Denver Colfax Marathon is the standard marathon distance of 42.195 kilometres (26.2 miles), certified to World Athletics rules. From the eastern end of Colfax Avenue in Aurora to the western end near Golden or the Colorado State Capitol.
- Is the Denver Colfax Marathon flat?
- Yes. The Denver Colfax Marathon is mostly flat with gentle undulations with 100 metres of total climbing over 42.195 km (26.2 miles) — a profile that suits runners chasing personal bests or Boston qualifying times.
- What time does the Denver Colfax Marathon start?
- The 2027 Denver Colfax Marathon starts at 6:00 am local time on Sunday, 23 May 2027. Arrive early for baggage drop and corral access — official race communications on www.runcolfax.org/ confirm any last-minute schedule changes.
- What is Colfax Avenue?
- Colfax Avenue is the longest continuous main street in America, stretching 42+ miles through the Denver metro. The marathon follows its length through the Mile High City.
- When is the Denver Colfax Marathon?
- The Colfax Marathon is held in May, typically on the fourth Sunday. Registration is at https://www.runcolfax.org/.
- How does Denver's altitude affect the Colfax Marathon?
- Denver sits at 1,600 m (5,280 ft). The flat Colfax course belies the thin-air challenge — pace conservatively and hydrate well.
- Where does the Colfax Marathon start and finish?
- The race starts at the eastern end of Colfax in Aurora and finishes at the western end near Golden or the State Capitol area.
- What weather should I expect in Denver in May?
- May in Denver is unpredictable spring weather, often 8–20 °C (46–68 °F) with possible afternoon thunderstorms. Layers and sun protection are both important.
