Found 245 races near Ontario, CA

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OCT
3

long beach, CA
• 37.1 miles
$22 -$40
It's time for the Haunted Heroes 5k, 10k, 15k, Half Marathon fun run/walk!!! Check-in - 6:45-7:30AM for everyone Start - 7:30AM Included in registration — - custom finisher medals - drawstring...
5K 10K 15K Half Marathon
5
OCT
3

Irvine, CA
• 30.0 miles
Just a walk in the park again - for the 4th year in a row! Our annual Superheroes Triumph 5K! is fighting crime in the OC again this year. This run, walk, and roll is taking over Mason Regional...
5K
4
OCT
3

Los Angeles, CA
• 36.7 miles
$20 -$65
Charity challenge in Los Angeles benefiting important causes with great community spirit
5K
47
OCT
4

Palos Verdes Peninsula, CA
• 45.1 miles
$45 -$50
This 5K offers the natural beauty of the Palos Verdes trails. Enjoy the shade of eucalyptus trees as you traverse the well-groomed horse trails over gently rolling hills. Invigorate your body....
5K
30
OCT
10

Long Beach, CA
• 37.0 miles
$74 -$194
Come experience one of the most scenic events in California, “Run Long Beach”. Starting in Downtown Long Beach, runners head towards the historic Queen Mary and then through Shoreline Village....
5K Half Marathon Marathon
11
OCT
10

Long Beach, CA
• 37.1 miles
$10 -$40
Join the National MPS Society at the 5th Annual Long Beach Race for Rare 5K Run & Walk Event hosted by Long Beach locals, Lynn and Scott Hopkins! This event is to raise money and awareness to...
5K
7
OCT
11

Montebello, CA
• 42.4 miles
Join the 10K & 5K races in Montebello with finisher medals - register now for this exciting running event!
5K 10K
387
OCT
17

Los Angeles, CA
• 32.6 miles
$30 -$45
The annual Boyle Heights 5K Run/Walk & Munchkin Fun Run takes place in the historic Mariachi Plaza and along the 6th Street Bridge. It starts & ends at Mariachi Plaza. The street will be lined up...
5K
4
OCT
17

Lake View Terrace, CA
• 45.0 miles
$26 -$44
We are back at Hansen Dam!! It's time for the Dam Spooky 5k, 10k, 15k, Half Marathon run/walk on Saturday 10/17/26! -Awesome medals for everyone! -Goodie bags -FREE photos & videos -Affordable...
5K 10K 15K Half Marathon
5
OCT
17

Long Beach, CA
• 35.1 miles
$29 -$48
🎃🐶 Howl-O-Ween Dog Run 🐶🎃               5K & 1 Miler📍 Granada Beach – 5000 E Ocean Blvd, Long Beach, CA 90803 Get ready for a paws-itively spooky good time at the Howl-O-Ween Dog Run — where...
1m 5K
7
OCT
17

Aqua Dulce, CA
• 48.3 miles
$80 -$195
OUT-OF-THIS-WORLD TRAIL RUNNING SPACEROCK: the final trail running frontier.These are the voyages of trail runners around the world.Your mission: to explore strange new trails, to seek out new...
5K 10K 15K Half Marathon
58
OCT
17

Agua Dulce, CA
• 48.2 miles
$65 -$195
SPACEROCK: the final trail running frontier. These are the voyages of trail runners around the world. Your mission: to explore strange new trails, to seek out new life and new experiences, to...
5K 10K 15K Half Marathon
20
OCT
18

Beverly Hills, CA
• 43.8 miles
$15 -$55
Run for a Cause in Beautiful Beverly Hills! Lace up and run through the flat, scenic streets of Beverly Hills at this year’s 5K on October 18th! Run on your own or on a team! The 5K and the Kids...
1K 5K
6
OCT
18

Riverside, CA
• 16.8 miles
$25 -$115
The 49th Annual Mission Inn Run returns to downtown Riverside on October 18, 2026!  The Mission Inn Run, a signature Riverside event and key fundraiser for the Mission Inn Foundation, has been a...
2K 5K 10K Half Marathon
98
OCT
18

Huntington Beach, CA
• 34.0 miles
$15 -$58
Witches Wave Halloween Run – A Spooky Sprint by the Sea! 🧙‍♀️🌊📍 Lot 25 Bolsa Chica State Beach🎃 Run Fast, Get Spooky, and Ride the Wicked Wave! The ocean’s not the only thing making waves this...
5K 10K Half Marathon
39
OCT
24

long beach, CA
• 37.1 miles
$22 -$40
It's time for our Monster Dash 5k, 10k, 15k, Half Marathon fun run/walk!!! Check-in - 6:45-7:30AM for everyone Start - 7:30AM Included in registration — - custom finisher medals - drawstring...
5K 10K 15K Half Marathon
2
OCT
24

Long Beach, CA
• 37.6 miles
$42 -$57
RunThrough USA Long Beach 5k,10k & Half Marathon Race in Long Beach - 5K, 10K. Register today for this exciting race!
5K 10K Half Marathon
30
OCT
24

Huntington Beach, CA
• 34.1 miles
$22 -$52
🎃 SoCal’s Sunset Trick or Trot 5K/10K 📅 Saturday, October 24th, 2026 | 🕔 5:00 PM (NOTE TIME. INTO the SUNSET📍 Bolsa Chica State Beach – Lot 25🌅 Featuring a TRUNK-or-TREAT EXPO that begins at 3pm...
5K 10K
36
OCT
24

IRVINE, CA
• 26.1 miles
$30 -$35
Description: Get ready to run, connect, and celebrate community at the Vaquero Strong 5K hosted by the PTSA and ASB of Irvine High School! Join us on Saturday, October 24, 2026 for a fun and...
5K
1
OCT
25

Huntington Beach, CA
• 34.6 miles
$30 -$65
Hop, Skip & Splash 5K Fun Run/Walk Making Waves for Water Safety in Orange County Join us on Sunday, October 25, 2026, for the 4th annual Hop, Skip & Splash 5K — a fun, family-friendly beachside...
5K
27