Found 149 races near Castro Valley, CA

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JUL
26

Courtland, CA
• 75.4 miles
$50
Run 5 or 10 miles on a mostly off-road country course at the Courtland Pear Fair, with a kids fun run and pancake breakfast.
5m 10m
44
JUL
26

San Francisco, CA
• 11.9 miles
The San Francisco Marathon offers stunning views of the Bay Area including a run across the Golden Gate Bridge. The challenging course features San Francisco's famous hills and iconic landmarks....
Half Marathon
106
AUG
1

San Leandro, CA
• 52.2 miles
$50 -$100
5k/10k/15k/Half Marathon in Long Beach by A Better World Running.
5K 10K Half Marathon
71
AUG
2

San Francisco, CA
• 44.9 miles
$79 -$90
10K, 5K, and Double 8K races on Crissy Field with views of the Golden Gate Bridge.
5K 8K 10K
82
AUG
2

San Francisco, CA
• 23.4 miles
Let's Go DSE--a new path! Literally! Only our third time here! Start in Crane Cove Park, run north along the waterfront, go around Oracle Park in a clockwise route, return along the waterfront to...
5K
54
AUG
8

Orinda, CA
• 42.9 miles
$50 -$105
All Bear Creek Race info (including registration links) here: https://brazenracing.com/bearcreek/   5K, 10K and half marathon in Briones Regional Park, Lafayette, California.
5K 10K Half Marathon
54
AUG
8

Napa, CA
• 42.9 miles
The Napa Lapa Trail Adventure is Inside Trail’s first time-based run. This means that instead of running a pre-determined distance as fast as possible, you’ll be running for a pre-determined...
14
AUG
9

San Francisco, CA
• 16.2 miles
Out and back course, starting and finishing at Fort Mason, near the Great Meadow. Flat, scenic course. Well, almost flat--the very end has a 0.2 mile challenging finishing hill, but the scenery...
10K
8
AUG
13

Cupertino, CA
• 6.7 miles
$50 -$110
An aquathon with a 1.5km swim and 5km run in Cupertino, plus youth and standalone options.
1m 5K
52
AUG
15

San Francisco, CA
• 42.2 miles
$30 -$60
Set a goal and run a 5K, 10K, or 13.1 half-marathon.
1m 5K 10K Half Marathon
78
AUG
15

Fremont, CA
• 42.0 miles
$25 -$107
Beer City Half SLAM is a multi-event festival race in Fremont featuring half-marathon, 10K, 5K, and dog-friendly racing options. The event supports local charities, includes craft beer tastings,...
5K 10K Half Marathon
126
AUG
15

Oakland, CA
• 16.0 miles
$50 -$110
The course travels through beautiful Redwood Regional Park. Enjoy the spectacular views along the East Ridge and West Ridge trails and wind through tall redwoods on the popular Stream and Bridle...
5m Half Marathon 30K Marathon 50K
109
AUG
16

San Francisco, CA
• 26.7 miles
Run north from Point Lobos Avenue on the Lands End Trail to Lincoln Highway and back. Expect beautiful Golden Gate and Pacific Ocean views on this trail run. Event details and scheduleRace day...
5K
48
AUG
16

Felton, CA
• 28.5 miles
$35 -$60
56th annual 10K race through the redwoods in Felton, CA
10K
28
AUG
16

San Francisco, CA
• 28.0 miles
$45 -$50
Trials of Miles Racing and A Runners Mind are excited to introduce the inaugural SF (Road) Mile, coming to San Francisco this August. This classic point-to-point road mile will take place on Old...
35
AUG
19

San Jose, CA
• 39.8 miles
Stratford Preparatory Blackford is dedicated to providing transportation services tailored to our families’ needs. Our routes are strategically designed to cover areas with the highest...
22
AUG
19

San Jose, CA
• 39.8 miles
Stratford Preparatory Blackford is dedicated to providing transportation services tailored to our families’ needs. Our routes are strategically designed to cover areas with the highest...
29
AUG
19

San Jose, CA
• 39.8 miles
Stratford Preparatory Blackford is dedicated to providing transportation services tailored to our families’ needs. Our routes are strategically designed to cover areas with the highest...
30
AUG
22

Stinson Beach, CA
• 38.7 miles
$180 -$240
Handicapped trail race from Stinson Beach to Mill Valley and back on the famous Dipsea Trail.
62
AUG
22

Gilroy, CA
• 36.6 miles
$25 -$85
Join us in Gilroy, California on Saturday, August 22, 2026, for the Race2Unravel — a powerful day of ACTION in the fight against childhood cancer. This inspiring community event features a 5K,...
5K 10K
71