Races within 25 mi of Diamond Bar, CA
18+ races
Long Beach Race for Rare 5K Run & Walk Event
Long Beach, CAIn 3 daysfrom $10
- 1 mi
- 5K
from $10View details
Rock It in Chino Hills 5K & 10K
Brea, CAIn 3 daysRegistration closed
- 5K
- 10K
Registration closedView details
Montebello Heritage 5K/10K
Montebello, CAIn 4 daysfrom $0
- 1K
- 5K
- 10K
from $0View details
MPSF Open Water Championships - Masters/Open 5 Kilometer and 1 Kilometer Open Water Swim
Long Beach, CAIn 10 days$100
- 1K
- 5K
$100View details
POMONA 5K & 10K
Pomona, CAIn 10 daysfrom $25
- 0.25 mi
- 5K
- 10K
- 9.3 mi
from $25View details
A Snail's Pace x Saucony Sunset Relays
Fullerton, CAIn 10 days$15
- 100 m
- 200 m
- 400 m
- 800 m
- 1600 m
- +1
$15View details
The Ruck Challenge
Norco, CAIn 10 daysfrom $60
- 5K
- 10K
from $60View details
Witches Wave - Halloween Run 5K, 10K, and Half Marathon by Califlow Runs
Huntington Beach, CAIn 11 daysfrom $15
- 200 yd
- 5K
- 10K
- Half
from $15View details
Pasadena Trail Half & 10k/5k
Pasadena, CAIn 11 daysRegistration closed
- 5K
- 10K
- Half
Registration closedView detailsRun4Recovery 5K Run/Walk
Covina, CA2 wks out$45
- 5K
$45View details
Vaquero Strong 5K
IRVINE, CA2 wks out$35
- 5K
$35View details
SoCal's Sunset Trick or Trot 5k/10K - Halloween Race
Huntington Beach, CA2 wks outfrom $22
- 0.5 mi
- 5K
- 10K
from $22View details
OC United 2026 Pumpkin Run and Ride
Fullerton, CA2 wks outfrom $25
- 5K
- 10 mi
- 11 mi
- 35 mi
from $25View details
Hop Skip and Splash 5K Fun Run/Walk
Huntington Beach, CA2 wks outfrom $50
- 5K
from $50View details
Trick or Trot 5K, 10K, and Half Marathon by Califlow Runs
Long Beach, CA2 wks outfrom $15
- 200 yd
- 5K
- 10K
- Half
from $15View details
Run for Hope
Claremont, CA2 wks out$10
- 5K
$10View details
Alhambra Pumpkin Run 2026
Alhambra, CA2 wks outfrom $50
- 1K
- 5K
- 10K
from $50View details
Hauntington Park 5K 2026
Huntington Park, CA3 wks out$25
- 0.62 mi
- 5K
$25View details
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