BN
Brazen New Years Day Runs
Race Date
Jan 1, 2027
Location
Castro Valley, CA
Course Info
Course Type
Loop Course
Terrain
trail
Difficulty
Ultra-Flat
Also Offers
10K5K trail run
Explore More Journeys
Can't make it to Castro Valley? Discover other experiences that match your running style.
Search All Races
Never miss
another
finish line.
Join our community of 350K+ half marathon runners. Get notified about new races, registration opens, and early bird pricing across all 50 states.