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18
Lake Evans Triathlon, 5k & 10k
Sun, Oct 18, 2026Bakersfield, United States
18
SD HipHop 5k
Sun, Oct 18, 2026San Diego, United States
18
Jeepers Creepers Marathon 2026
Sun, Oct 18, 2026Valencia, United States
18
The Fresno Donut Run
Sun, Oct 18, 2026Fresno, United States
18
2026 — Cloverdale Vineyard Races: 10K and 5K
Sun, Oct 18, 2026Cloverdale, United States
22
Weekend at Burney
Thu, Oct 22, 2026Cassel, United States
23
San Diego 200 Endurance Run
Fri, Oct 23, 2026Escondido, United States
24
2nd Annual TALI Sadlers Creek Off-Road Duathlon
Sat, Oct 24, 2026Anderson, United States
24
Wildwood Canyon Trail Run
Sat, Oct 24, 2026Yucaipa, United States
24
Monster Mash Dash Halloween Run
Sat, Oct 24, 2026Fresno, United States
24
Trail Run at Sly Park - Fall
Sat, Oct 24, 2026Pollock Pines, United States
24
Big Sur River Run
Sat, Oct 24, 2026Big Sur, United States
24
Miles for Migraine - San Francisco 2026
Sat, Oct 24, 2026San Francisco, United States
24
Victor Valley Bicycle Tour 2026
Sat, Oct 24, 2026Apple Valley, United States
24
Pink on Parade
Sat, Oct 24, 2026Riverside, United States
24
2026 Napa Fall Wine Country Marathon, Half Marathon & 10K
Sat, Oct 24, 2026Calistoga, United States
25
2026 BINATIONAL RACE
Sun, Oct 25, 2026San Diego, United States
25
SoCal's Sunset Trick or Trot 5k/10K - Halloween Race
Sun, Oct 25, 2026Huntington Beach, United States
25
Day of The Dead 5K
Sun, Oct 25, 2026Fair Oaks, United States
25
Hop Skip and Splash 5K Fun Run/Walk
Sun, Oct 25, 2026Huntington Beach, United States
25
Finish The Ride and Finish The Run Santa Clarita
Sun, Oct 25, 2026Valencia, United States
25
2026 Winters Spooktacular Fun Run and Costume Contest
Sun, Oct 25, 2026Winters, United States
25
DIA DE LOS MUERTOS 5K RUN/WALK - CLOVIS
Sun, Oct 25, 2026Clovis, United States
25
2026 Dia De Los Miles
Sun, Oct 25, 2026Elk Grove, United States
25
Crown Point Relay Runs
Sun, Oct 25, 2026San Diego, United States
28
Machete Muertos 200
Wed, Oct 28, 2026Perris, United States
30
USS Hornet Haloween 5k
Fri, Oct 30, 2026Alameda, United States
31
Haunted Sacramento 5K, 10K
Sat, Oct 31, 2026Sacramento, United States
31
Los Muertos 5k
Sat, Oct 31, 2026Los Angeles, United States
31
Halloween Trick or Trot Run 5K/10K/13.1
Sat, Oct 31, 2026Sacramento, United States