SPASM Lake Chabot Trail Run
SPASM Lake Chabot Trail Run offers a scenic loop around a popular reservoir, ideal for beginner trail runners.
Race Date
Apr 24, 2027
Location
Castro Valley, CA
Quick facts
- Date
- Saturday, April 24, 2027
- Location
- Castro Valley, California
- Distance
- Half marathon (13.1 mi) + 5 Miles, 17.9 Miles, 26.2 Miles, 31 Miles
- Course
- Loop Course
- Terrain
- Mixed
- USATF certified
- Not listed
- Finishers on record
- 357
Highlights
Good For
Atmosphere
Course
The Experience
The SPASM Lake Chabot Trail Run invites participants to explore the scenic beauty surrounding the popular Lake Chabot reservoir. This event, first held in 2022, offers a welcoming environment for runners of all levels, particularly those new to trail running.
The course, accurately measured and designed to be beginner-friendly, circumnavigates the reservoir and its surrounding hills. While offering a natural setting, the course is noted for its minimal elevation changes, making it a forgiving option for those seeking a less demanding trail experience.
With a typical field size of around 62 finishers, the event fosters a more intimate atmosphere. Runners typically hail from about six states, and the event has seen a steady field size since its inception. The SPASM Lake Chabot Trail Run is a great option for a low-key, scenic outing.
Race-provided description
The course starts at the Marina and travels around the popular Lake Chabot reservoir and surrounding hills. Great course for first-time trail runners! (Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)
Logistics
Race Day
Saturday, April 24, 2027
Start Time
8:30 AM
Giveaway
T-Shirt
Start Location
Lake Chabot Regional Park - Marina, Castro Valley, CA, 94546
Course Info
Course Type
Loop Course
Terrain
mixed
Scenery
Lake River, Park
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Quality Score
Solid Pick414 years running
~55 finishers a year
growing or steady
2% returning runners
4 timing sources
runners from 6 states
winner 1:45:10
typical high 62°F
Race Day Weather
5-year historical avgStart (Low)
47°
Afternoon (High)
62°
Pleasant conditions — light layers at start, comfortable by finish
0.0"
Precipitation
12 mph
Wind
77%
Humidity
Historical Finish Times
How 357 finishers actually crossed the line across 4 years.
Most recent
2026
Total finishers
357
Median time
2:37:35
Latest turnout
62
States
14
Turnout by year
2022–2026
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the SPASM Lake Chabot Trail Run?
The SPASM Lake Chabot Trail Run is held on Saturday, April 24, 2027, starting at 8:30 AM.
Where does the SPASM Lake Chabot Trail Run take place?
It takes place in Castro Valley, California.
What distances does the SPASM Lake Chabot Trail Run offer?
The half marathon (13.1 miles), plus 5 Miles, 17.9 Miles, 26.2 Miles, 31 Miles.
Is the SPASM Lake Chabot Trail Run course flat and good for a PR?
The SPASM Lake Chabot Trail Run is a ultra-flat, loop course course.
How many people run the SPASM Lake Chabot Trail Run?
HalfRuns has finish records for 357 runners who have completed the SPASM Lake Chabot Trail Run.
HalfRuns editorial — independent, no paid placement.
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