Found 171 races near Contra Costa County, CA

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SEP
27

San Francisco, CA
• 33.6 miles
Join us for the best bargain half marathon in the Bay Area! Three loops around the paved Lake Merced bike path includes aid stations, post-race snacks, finisher ribbons to all participants, and...
4m Half Marathon
4
OCT
3

Lodi, CA
• 30.3 miles
Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Each course will be held on beautiful properties or various partner vineyards...
1K 5K
4
OCT
4

Santa Rosa, CA
• 55.7 miles
$30 -$105
1 in 8 women will be diagnosed with breast cancer in their lifetime. Cindy is a mother, a wife, a friend who  received this diagnosis.So, we race. We race for awareness. We race for the 1 in...
1K 6K 10K 10m
21
OCT
4

Napa, CA
• 31.7 miles
$70 -$120
The Napa Half Marathon is nestled up in the rolling hills of east Napa. Scenic, rustic and winding roads will take you from the start at Skyline Park through the vineyard lined neighborhoods in a...
6m Half Marathon
46
OCT
4

San Jose, CA
• 41.6 miles
Rock 'n' Roll San Jose brings the party to Silicon Valley with a scenic course through downtown San Jose.
5m Half Marathon
5
939
OCT
4

San Francisco, CA
• 22.1 miles
Scenic, challenging loop course. Starts and finishes at the mini-park located at 34th Avenue and Wawona Street. Event details and scheduleRace day registration and check in 8am-8:45am. Race...
4m
2
OCT
10

American Canyon, CA
• 39.0 miles
Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Each course will be held on beautiful properties or various partner vineyards...
1K 5K
10
OCT
10

Lafayette, CA
• 59.0 miles
$30 -$55
  About the Lafayette Res Run for Education The Lafayette Chamber and the City of Lafayette are co-sponsors of the Lafayette Res Run for Education which is traditionally held the third Sunday in...
2m 5K 10K
36
OCT
10

Petaluma, CA
• 43.3 miles
$50
Run for Austin’s Lungs is a family-friendly 5K walk/run held in honor of baby Austin, who is bravely battling chronic lung disease. Join us to celebrate his first birthday, raise awareness of his...
26
OCT
10

San Francisco, CA
• 28.7 miles
The course is a 4.5 mi loop around Lake Merced.
50K 50m
49
OCT
11

San Francisco, CA
• 33.7 miles
Out and back course along JFK Drive in Golden Gate Park. Unique opportunity to run both west and east sides of the park. Gradual uphill to flat on first half, gradual downhill to flat on second...
10K
12
OCT
17

Elk Grove, CA
• 44.9 miles
$45 -$55
Come enjoy a 1.4 mile walk or 2.8 mile run and a day of fun activities in support of NBCAWR.  Early Bird Registration: $45 (starts June 15th; ends Aug. 9th)  **If you are a Breast Cancer...
1m 2m
OCT
17

San Jose, CA
• 43.2 miles
The County of Santa Clara Reentry Resource Center and its partners are hosting a 5K run/walk to raise money to support the immediate needs of justice-involved people (clothing, food, hygiene,...
5K
21
OCT
17

Alameda, CA
• 6.6 miles
$39
  Sign up now for the 4th annual Donut Fun Run on Saturday, October 17, 2026!  Register now for the lowest possible price! $39 adults, $29 for kids under 18, and $29 for seniors. ALL...
85
OCT
18

San Francisco, CA
• 30.3 miles
Challenging course consisting of grass, trails, and bike paths. Ever wonder what running through sand, grass, wood chips, and paved roads would feel like, all while taking in the amazing scenery...
5K
1
OCT
24

San Francisco, CA
• 31.5 miles
Miles for Migraine will host its 17th annual 2-mile Walk, 5K Run and Relax San Francisco Event at the Music Concourse Bandshell at Golden Gate park. This event is a fundraiser for Migraine &...
2m 5K
3
OCT
24

Sacramento, CA
• 54.4 miles
$35 -$60
The Night Nation Run is the World’s first Running Music Festival the ultimate blend of a Music Festival and a Fun Run. Experience a music filled course with Live DJs, Bubble Zones, Light Shows,...
8
OCT
25

Winters, CA
• 42.8 miles
$20 -$45
RACE EVENT DESCRIPTION: Grab your costume and running shoes and head out to the 2026 Winters Runners and Walkers Club Spooktacular Fun Run and Costume Contest on Sunday, October 25th.  We’re...
1m 5K 10K
36
OCT
25

San Francisco, CA
• 34.1 miles
Flat, fast, out and back course along paved Great Highway bike path. Come dressed in your Halloween finest! Also, free 1/2 mile Kids Run for children ages 12 and under immediately following the...
5K
2
OCT
30

Alameda, CA
• 22.9 miles
$45 -$55
Event Details: October 30th.  Friday pre-halloween Evening Run  We have partnered with the USS Hornet to bring back a super fun and unique race experience to Alameda. Our "day of the dead"...
5K
15