SGRAIL Marin - Triathlon & Trail Half Marathon
San Rafael, California5:00 PM startTrail
from Free
RegisterCalifornia ultramarathons
Ultramarathons in California
66 upcoming ultramarathons in California listed by date, with cities, start times, and entry fees. Find a ultramarathon near you and register.
66
upcoming races
3
cities with 3+
6:35:17
typical finish
October 2026
from $130
Register
from Free
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from $85
RegisterSonoma Fall Classic
Geyserville, California5:00 AM startTrail
from $175
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from $15
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from Free
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from $50
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from $15
RegisterPinkathon 2026 Virtual and In-Person Challenge for Breast Cancer!
Any Place in the World!, California7:00 AM start
from $25
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from $25
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from $15
RegisterNovember 2026
2026 Optimism Cal Tri Newport Dunes - 11.1.26
Newport Beach, California7:00 AM start
from $43.86
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from $60
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from $40
RegisterLake Chabot Trail Run
Castro Valley, California8:20 AM startTrail
from Free
RegisterMainly Marathons Southwest Series: Nipton, California
Nipton, California6:00 AM start
from $105
RegisterDecember 2026
from $50
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January 2027
from $165
RegisterSan Diego 50 & Trail Runs
Escondido, California6:00 AM startTrail
from $15
RegisterSPASM Crystal Springs Trail Run
Woodside, California7:50 AM startTrail
from Free
RegisterFebruary 2027
from $65
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from Free
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from $40
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from $149
RegisterMontara Mountain Trail Run
Pacifica, California7:45 AM startTrail
from Free
RegisterL.A. CHINATOWN FIRECRACKER 5K/10K/KIDDIE/PAW'ER DOG RUN/WALK & BIKE RIDE
Los Angeles, California8:00 AM start
from $11.32
RegisterMarch 2027
from $107
RegisterFinish The Ride and Finish The Run Griffith Park
Los Angeles, California7:30 AM start
from $10
Register
from Free
RegisterApril 2027
from $189
RegisterUltramarathon results in California
From 41 ultramarathons with official results in the last two years, 2,794 finishers in all.
6:35:17
typical finish
12:43 /mi
typical pace
49
finishers in a typical race
7:02:12
women, typical finish
6:30:53
men, typical finish
under 5:10:32
the fastest tenth
Entry for upcoming ultramarathons in California usually runs from $90 to $154, with a typical fee of $100 before processing fees.
Typical times are the middle finisher across these races, weighted by field size. School meets, stair climbs, and results with timing errors are left out.
Fastest 50Ks in California
- 1Woodside RambleWoodside · median 5:51:07 · 78 finishers in 2025
- 2Golden State Trail RunEast Garrison · median 6:29:32 · 90 finishers in 2026
- 3Rodeo Valley Trail RunSausilto · median 6:33:48 · 79 finishers in 2026
- 4Mt. Tam Trail RunStinson Beach · median 6:33:52 · 122 finishers in 2024
- 5Lake Hodges Trail FestivalSan Diego · median 6:34:22 · 159 finishers in 2025
Biggest ultramarathons in California
- 1Quicksilver 100K and 50KSan Jose · 179 finishers in 2026
- 2San Diego 50 & Trail RunsEscondido · 168 finishers in 2026
- 3Lake Hodges Trail FestivalSan Diego · 159 finishers in 2025
- 4FOURmidableAuburn · 150 finishers in 2026
- 5Shadow of the Giants 50k & 20k RunFish Camp · 132 finishers in 2026
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