Ultramarathons in California
30 upcoming ultramarathons in California, USA.
27 cities
Busiest: December
From €57
Upcoming races
Your guide to ultramarathons in California, USA
There are 30 upcoming ultramarathons in California, USA, spread across 27 cities. Filter by distance or terrain to narrow things down, and save the races you like the look of.
Most take place in December, November and May. Next up is 4th Machete Trail Madness - 200 Miler in Perris on 30 October 2026.
Questions runners ask
How many ultramarathons in California, USA are there?
Finndu lists 30 upcoming ultramarathons in California, USA, across 27 towns and cities. The list is updated twice a day as organisers announce new races.
When is the next one?
4th Machete Trail Madness in Perris, on 30 October 2026.
Which month has the most ultramarathons in California, USA?
December, followed by November and May.
How much does it cost to enter?
Entry starts from US$65. Fees vary from race to race, so check each race page for its current price.