The 2025 Colorado Marathon took place on Sunday, May 4, 2025, in Fort Collins, Colorado, USA. Participants experienced a thrilling downhill course with an elevation drop of approximately 1,200 feet, starting at around 6,111 feet above sea level. On that day, the weather in Fort Collins ranged from 41°F to 75°F (5°C to 24°C), with moderate humidity and light rain showers in the cooler morning hours before gradually warming up as the day progressed. Runners enjoyed a scenic route through the beautiful Poudre Canyon, along the Cache La Poudre River, and past stunning mountain vistas, with many seizing the opportunity to earn a Boston qualifying time thanks to the course’s fast nature.

What distances are available for this event?

• →Marathon starting at 7:30 AM
• →Half Marathon starting at 7:30 AM
• →10K race starting at 7:30 AM
• →5K race starting at 7:30 AM

How much does registration cost?

• →Early bird registration: $75 (until March 1st)
• →Regular registration: $100 (March 2nd - April 15th)
• →Race day registration: $120

What is the course type and elevation drop?

The course is primarily downhill with an elevation drop of approximately 1,200 feet, making it an excellent opportunity for fast times and Boston qualifying.

What are the key landmarks on the course?

Notable landmarks include:

• →Tunnel at mile 2.5 (141 ft drop)
• →Picnic Rock Natural Area (half-marathon route)
• →Overland Trail Bridge at mile 21.5 (transition to finish)

What is the course closure time?

The course will close after 6 hours from the start time, ensuring that all participants have ample time to complete their race.

What are the finisher perks?

Participants can look forward to unique awards and vibrant race swag as part of their finisher perks.

What should runners know about the weather conditions?

Runners should prepare for temperatures ranging from 41°F to 75°F (5°C to 24°C) with possible rain showers in the morning and warmer conditions in the afternoon.

What type of community atmosphere can participants expect?

The event fosters a supportive, wellness-focused atmosphere with smaller crowds and breathtaking scenery, enhancing the overall running experience.

Are there any environmental considerations for this event?

The Colorado Marathon is committed to being eco-friendly, offering online registration to reduce paper waste.