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California 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

Other distances

April 2027

May 2027

June 2027

July 2027

August 2027

September 2027

Ultramarathon 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

  1. 1Woodside RambleWoodside · median 5:51:07 · 78 finishers in 2025
  2. 2Golden State Trail RunEast Garrison · median 6:29:32 · 90 finishers in 2026
  3. 3Rodeo Valley Trail RunSausilto · median 6:33:48 · 79 finishers in 2026
  4. 4Mt. Tam Trail RunStinson Beach · median 6:33:52 · 122 finishers in 2024
  5. 5Lake Hodges Trail FestivalSan Diego · median 6:34:22 · 159 finishers in 2025

Biggest ultramarathons in California

  1. 1Quicksilver 100K and 50KSan Jose · 179 finishers in 2026
  2. 2San Diego 50 & Trail RunsEscondido · 168 finishers in 2026
  3. 3Lake Hodges Trail FestivalSan Diego · 159 finishers in 2025
  4. 4FOURmidableAuburn · 150 finishers in 2026
  5. 5Shadow of the Giants 50k & 20k RunFish Camp · 132 finishers in 2026
When ultramarathons happen in California