Brazen New Year’s Day2027
01.01.2027Castro Valley (United States)
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3 courses · 5–21.1 km · up to 632 m D+
3 courses
Course analysis
21.1 km632 m D+
27effort kmⓘ21.1 km on the map · feels like 27 km
- D+
- 632 m
- D−
- 723 m
- Max alt.
- 258 m
- Steepest
- 12%
Segments
Elevation profile: 13.1M
72 m — 258 m
The race
A scenic and invigorating trail race at Lake Chabot in Castro Valley, offering 5K, 10K, and half marathon distances.
Where to stay
Find a place to stay near Castro Valley for the race.
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