Trail race guide
Calero Trail Run: date, distances, elevation, and registration
Calero Trail Run is a moderate trail race organized by Troy's California Trail Runs. It offers 5K, 10K, 15K, Half, 25K, Marathon, 50K distances on Saturday, December 5, 2026.
- Date
- Saturday, December 5, 2026
- Location
- Calero County Park · San Jose
- Distances
- 5K · 10K · 15K · Half · 25K · Marathon · 50K
- Elevation gain
- 5K 252′ · 10K 1,187′ · 15K 1,751′ · Half 2,477′ · 25K 2,726′ · Marathon/50K not published
- Difficulty
- Moderate
- Registration
- Registration open
- Official source
- Troy's California Trail Runs · Verified Aug 30, 2026
Questions about Calero Trail Run
When and where is Calero Trail Run?
Calero Trail Run is scheduled for Saturday, December 5, 2026 at Calero County Park · San Jose.
How do I register for Calero Trail Run?
Use the official registration button on this page. Registration, payment, waivers, transfers, cancellations, and refunds are handled by Troy's California Trail Runs.
What distances are available?
Calero Trail Run currently lists 5K, 10K, 15K, Half, 25K, Marathon, 50K.
Can I invite a friend?
Yes—use the prefilled text or email invitation. It includes the race date, a suggested distance, and this guide.