California · 50K · 35K · 13K
FOURmidable
FOURmidable is a 50K, 35K, 13K and 13.4 Miles event held in Auburn, California. Its next confirmed date is Saturday, February 20, 2027. About 209 runners take part across all distances.
- Race day
- February 20, 2027
- Location
- Auburn, CA
- Field size
- ~209 runners
Race details
- Date
- Saturday, February 20, 2027
- Location
- Auburn, California
- Distances
- 50K, 35K, 13K, 13.4 Miles
- Field size
- About 209 runners
- Course
- 6000 ft gain
- Registration
- runsignup.com
- Official website
- singletrackrunning.com
Registration, course & weather
- Start time
- 8:00 AM PST
- Course profile — 50K
- Loop course; Trail surface
- Course profile — 35K
- Loop course; Trail surface
About the FOURmidable
Use this page to sign up for FOURmidable trail race starting Feb 20, 2026 up until the start of the race. Simply sign up using your smart phone and the system will automatically add you to the packet pick up roster. After signing up, line up to pick up your bib in the correct line.
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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.
FOURmidable: common questions
- When is the FOURmidable?
- The next confirmed date is Saturday, February 20, 2027.
- Where is the FOURmidable held?
- In Auburn, California.
- What distances does the FOURmidable offer?
- 50K, 35K, 13K and 13.4 Miles.
- How many people run the FOURmidable?
- About 209 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 FOURmidable?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- What time does the FOURmidable start?
- 8:00 AM PST.
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.