Bad Bass
Race Date
Jul 19, 2025
Location
Castro Valley, CA
The Experience
Race website and registration information available here: https://brazenracing.com/badbass/
Logistics
Race Day
Saturday, July 19, 2025
Start Time
8:30 AM
Start Location
17600 Lake Chabot Rd, Castro Valley, CA, 94546
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Quality Score
Standout6715 years running
~269 finishers a year
growing or steady
22% returning runners
2 timing sources
runners from 4 states
winner 1:28:20
typical high 71°F
Race Day Weather
5-year historical avgStart (Low)
55°
Afternoon (High)
71°
Warm — hydration strategy is key, start conservatively
0.0"
Precipitation
11 mph
Wind
77%
Humidity
Historical Finish Times
How 3,064 finishers actually crossed the line across 15 years.
Most recent
2025
Total finishers
3,064
Median time
2:37:16
Latest turnout
138
States
30
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
Explore More Journeys
Can't make it to Castro Valley? Discover other experiences that match your running style.
Search All Races
