10Ks within 25 mi of Diamond Bar, CA
20+ races
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
POMONA 5K & 10K
Pomona, CAIn 10 daysfrom $25
- 0.25 mi
- 5K
- 10K
- 9.3 mi
from $25View 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 detailsSoCal's Sunset Trick or Trot 5k/10K - Halloween Race
Huntington Beach, CA2 wks outfrom $22
- 0.5 mi
- 5K
- 10K
from $22View 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
Alhambra Pumpkin Run 2026
Alhambra, CA2 wks outfrom $50
- 1K
- 5K
- 10K
from $50View details
The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs
Long Beach, CA3 wks outfrom $18
- 400 yd
- 5K
- 10K
- Half
from $18View details
2026 Optimism Cal Tri Newport Dunes - 11.1.26
Newport Beach, CA3 wks outfrom $53.86
- 400 yd
- 0.93 mi
- 3 mi
- 6 mi
- 50.5K
from $53.86View details
DINO DASH
Tustin, CA3 wks outfrom $0
- 2K
- 5K
- 10K
- 15K
from $0View details
Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs
Long beach, CA3 wks outfrom $25
- 1 mi
- 5K
- 10K
- Half
from $25View details
RUN FOR FREEDOM
San Dimas, CA4 wks outfrom $40
- 5K
- 10K
from $40View details
Beer City Half™ OC
Santa Ana, CA4 wks outfrom $25
- 1 mi
- 5K
- 10K
- Half
from $25View details
The Stuffing Shuffle – 5K, 10K, Half Marathon
Fountain Valley, CA5 wks outfrom $29.50
- 5K
- 10K
- Half
from $29.50View details
Huffin for the Stuffin- Turkey Trot 5K, 10K, & Half Marathon
Long Beach, CA5 wks outfrom $15
- 200 yd
- 5K
- 10K
- Half
from $15View details
Anaheim Turkey Trot 5K/10K -Corner of Katella on the SANTA ANA RIVER TRAIL. Across the street from Honda Center
Anaheim, CA6 wks outfrom $30
- 1 mi
- 5K
- 10K
from $30View details
Furgiving Run: Turkey Trot 5K, 10K, Half Marathon by Califlow Runs
Long Beach, CA6 wks outfrom $0
- 300 yd
- 1 mi
- 5K
- 10K
- Half
from $0View details
Plymouth Rock n Run
Anaheim, CA7 wks outfrom $15
- 880 yd
- 5K
- 10K
from $15View details
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