Colorado · Backyard Ultra
Rocky's Backyard Ultra
Rocky's Backyard Ultra is a Backyard Ultra event held in Estes Park, Colorado. It was last held on October 10, 2026 and is usually run in October; the next date hasn't been announced yet. About 250 runners take part across all distances.
- Usually held
- October
- Location
- Estes Park, CO
- Field size
- ~250 runners
Race details
- Last held
- October 10, 2026
- Usually held in
- October
- Location
- Estes Park, Colorado
- Distances
- Backyard Ultra
- Field size
- About 250 runners
- Course
- 500 ft gain
- Registration
- runningwildevents.com
Registration, course & weather
- Registration status
- Registration status as last checked September 26, 2026: open
- Start time
- 10:00 AM MDT
- Course profile
- Loop course; Trail surface
About the Rocky's Backyard Ultra
Rocky's Backyard Ultra is an October last-runner-standing backyard ultra in Estes Park, CO, run by Running Wild Events on a 4.167-mile mountain singletrack loop bordering Rocky Mountain National Park, with roughly 500ft of gain per loop. The event awards $1,000 cash to the sole finisher and buckles to anyone reaching 100 miles.
More races in Estes Park
More upcoming races in Colorado
Keep exploring
- All races in Colorado
- 5Ks in Colorado 120 upcoming races
- 10Ks in Colorado 70 upcoming races
- Half Marathons in Colorado 51 upcoming races
- Marathons in Colorado 13 upcoming races
- October races in Colorado
- Races in Oklahoma 92 upcoming races
- Races in Kansas 88 upcoming races
- Races in Utah 110 upcoming races
- Races in Nebraska 58 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Rocky's Backyard Ultra: common questions
- When is the Rocky's Backyard Ultra?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Rocky's Backyard Ultra held?
- In Estes Park, Colorado.
- What distances does the Rocky's Backyard Ultra offer?
- Backyard Ultra.
- How many people run the Rocky's Backyard Ultra?
- About 250 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Rocky's Backyard Ultra?
- Registration is handled by the organiser at runningwildevents.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Rocky's Backyard Ultra?
- Registration status as last checked September 26, 2026: open. $120 (from runningwildevents.com, checked September 26, 2026).
- What time does the Rocky's Backyard Ultra start?
- 10:00 AM MDT.
- What is the course like at the Rocky's Backyard Ultra?
- Loop course; Trail surface.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.