Rocky Ridge
Race Date
Sep 20, 2025
Location
san Ramon, CA
The Experience
Half marathon, 10K and 5K on the trails at Las Trampas Wilderness!
Logistics
Race Day
Saturday, September 20, 2025
Start Time
7:30 AM
Start Location
18012 Bollinger Canyon Rd, san Ramon, CA, 94583
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
Solid Pick6016 years running
~228 finishers a year
shrinking
37% returning runners
2 timing sources
runners from 2 states
winner 2:12:54
typical high 78°F
Race Day Weather
5-year historical avgStart (Low)
55°
Afternoon (High)
78°
Warm — hydration strategy is key, start conservatively
0.0"
Precipitation
9 mph
Wind
74%
Humidity
Historical Finish Times
How 2,713 finishers actually crossed the line across 16 years.
Most recent
2025
Total finishers
2,713
Median time
3:35:22
Latest turnout
107
States
22
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
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