Win your entry for the 100km run Biel in Switzeland

2015 - 2016 California Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in California among 189 races.

189 races

Montara Mountain 50K Trail Run

  • North America | USA | Pacific | California | Pacifica
  • Ultramarathon - 50 kilometers
  • February 21, 2015 - 08:00
  • Costal Trail Runs Trail

West Coast 50K

  • North America | USA | California | San Jose
  • Ultramarathon - 50 kilometers
  • February 22, 2015 - 08:00
  • Hilly Trail West Coast Trail Runs

Orange Curtain 100K

  • North America | USA | California | Liberty Park, Cerritos
  • Ultramarathon - 100 kilometers
  • February 28, 2015 - 06:00
  • Road Running

Orange Curtain 50K Afternoon

  • North America | USA | California | Liberty Park, Cerritos
  • Ultramarathon - 50 kilometers
  • February 28, 2015 - 13:00
  • Road Running

Orange Curtain 50K Morning

  • North America | USA | California | Liberty Park, Cerritos
  • Ultramarathon - 50 kilometers
  • February 28, 2015 - 06:00
  • Road Running

Razorback 100K Endurance Race

  • North America | USA | California | San Martin
  • Ultramarathon - 100 kilometers
  • February 28, 2015 - 06:00

Razorback 100 Mile Endurance Race

  • North America | USA | California | San Martin
  • Ultramarathon - 100 miles
  • February 28, 2015 - 06:00

Razorback 125 Mile Endurance Race

  • North America | USA | California | San Martin
  • Ultramarathon - 125 miles
  • February 28, 2015 - 06:00

Razorback 50K Endurance Race

  • North America | USA | California | San Martin
  • Ultramarathon - 50 kilometers
  • February 28, 2015 - 06:00

Razorback 50 Mile Endurance Race

  • North America | USA | California | San Martin
  • Ultramarathon - 50 miles
  • February 28, 2015 - 36:00

Run for Amma 50K

  • North America | USA | California | Sunnyvale
  • Ultramarathon - 50 kilometers
  • February 28, 2015 - 08:45
  • Charity Trail

Run for Amma 50 Miler

  • North America | USA | California | Sunnyvale
  • Ultramarathon - 50 miles
  • February 28, 2015 - 05:00
  • Charity Trail

Salmon Falls 50K

  • North America | USA | California | Pilot Hill
  • Ultramarathon - 50 kilometers
  • February 28, 2015 - 08:00
  • Trail

Sycamore 100k

  • North America | USA | California | Poway
  • Ultramarathon - 100 kilometers
  • February 28, 2015 - 06:00
  • Trail Relay

Lake Natoma 50K

  • North America | USA | California | Folsom
  • Ultramarathon - 50 kilometers
  • March 01, 2015
  • Elemental Running and Training