California · 50K · Trail Marathon · 25K
Calero Trail Run - Winter
Calero Trail Run - Winter is a 50K, Trail Marathon, 25K, half marathon and 15K event held in San Jose, California. Its next confirmed date is Saturday, December 5, 2026.
- Race day
- December 5, 2026
- Location
- San Jose, CA
Race details
- Date
- Saturday, December 5, 2026
- Location
- San Jose, California
- Distances
- 50K, Trail Marathon, 25K, Half Marathon, 15K, 10K, 5K, Mile, Kids Run
- Course
- 2726 ft gain
- Registration
- ultrasignup.com
- Official website
- tctruns.com
Registration, course & weather
- Registration status
- Open
- Start time
- 8:00 AM PST
- Course profile — 50K
- Loop course; Trail surface
- Course profile — Trail Marathon
- Loop course; Trail surface
- Course profile — 25K
- Loop course; Trail surface; 2726 ft gain (estimated from third-party elevation data)
- Course profile — Half Marathon
- Loop course; Trail surface; 2477 ft gain (estimated from third-party elevation data)
- Course profile — 15K
- Out-and-back course; Trail surface; 1751 ft gain (estimated from third-party elevation data)
- Course profile — 10K
- Out-and-back course; Trail surface; 1187 ft gain (estimated from third-party elevation data)
- Course profile — 5K
- Out-and-back course; Trail surface; 252 ft gain (estimated from third-party elevation data)
About the Calero Trail Run - Winter
Calero Trail Run - Winter in San Jose, CA.
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Guides from the RaceRove blog
- 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.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Calero Trail Run - Winter: common questions
- When is the Calero Trail Run - Winter?
- The next confirmed date is Saturday, December 5, 2026.
- Where is the Calero Trail Run - Winter held?
- In San Jose, California.
- What distances does the Calero Trail Run - Winter offer?
- 50K, Trail Marathon, 25K, Half Marathon, 15K, 10K, 5K and Mile.
- How do I register for the Calero Trail Run - Winter?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Calero Trail Run - Winter?
- Yes — registration is open. Listed fee for the longest distance, $115 (from tctruns.com, checked October 16, 2026).
- What time does the Calero Trail Run - Winter 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.