
SPASM Lake Chabot Trail Run is a running and trail running race on April 17, 2027 in Castro Valley, CA, with entry fees from $60 to $90.
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.)
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
67°
Typical Low
50°
Chance of Rain
20%
Based on US Climate Normals data from Hayward Air Terminal, 5 mi from the venue.
City Elevation
393 ft
Nearest Airport
OAK
San Francisco Bay Oakland International Airport · 9 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Every finish line starts with a single decision. Claim your spot at SPASM Lake Chabot Trail Run, put it on the calendar, and turn “someday” into a start date.
178
Days to train
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This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
SPASM Lake Chabot Trail Run
Apr 17, 2027