2016 - 2017 California Ultramarathon Calendar in October

Browse our Ultramarathon Calendar for races organized in California during the month of October among 24 races.

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24 races

Cuyamaca 100K Endurance Run

October 07, 2017 To be confirmed Race day in 10 months
USA / Pacific / California / Cuyamaca Rancho State Park
Ultramarathon - 100 kilometers
UTMB Qualifier Trail Western States Qualifier

Rocky Peak Ultra Trail Race

50K Ultra Run
October 14, 2017 Race day in 10 months
USA / Pacific / California / Simi Valley
Ultramarathon - 50 kilometers
Charity Trail

Whoos in El Moro

Whoos in El Moro 50k
October 03, 2015 The race has already taken place.
USA / Pacific / California / Newport Beach
Ultramarathon - 50 kilometers
Hilly Trail

Widowmaker Trail Runs

Widowmaker Trail 50K Run
October 04, 2015 The race has already taken place.
USA / Pacific / California / El Cajon Wilderness
Ultramarathon - 50 kilometers
Trail

Boggs Mountain Boogie 50k

October 11, 2015 The race has already taken place.
USA / Pacific / California / Cobb
Ultramarathon - 50 kilometers
Trail Relay

100 Mile Endurance Challenge

EC 100
No race in 2016
USA / Pacific / California / Corona
Ultramarathon - 101.600 miles
Charity Road Running

100 Mile Endurance Challenge

EC 50
No race in 2016
USA / Pacific / California / Corona
Ultramarathon - 51.500 miles
Charity Road Running

Ragnar Relay Napa Valley

October 23, 2015 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 186.400 miles
Ragnar Relay Series Relay

Stinson Beach

Stinson Beach 50 km
October 24, 2015 The race has already taken place.
USA / Pacific / California / Stinson Beach Park, Stinson Beach
Ultramarathon - 50 kilometers
Pacific Trail Runs

Headwaters Ultra

Headwaters Ultra - 50K
October 01, 2016 The race has already taken place.
USA / Pacific / California / Mount Shasta City
Ultramarathon - 50 kilometers

Joshua Tree Ultra

100 Miler
October 08, 2016 The race has already taken place.
USA / Pacific / California / Twentynine Palms
Ultramarathon - 100 miles
Desert Trail Fast

Joshua Tree Ultra

50 Miler
October 08, 2016 The race has already taken place.
USA / Pacific / California / Twentynine Palms
Ultramarathon - 50 miles
Desert Trail Fast

Dick Collins Firetrails 50

October 08, 2016 The race has already taken place.
USA / Pacific / California / Lake Chabot
Ultramarathon - 50 miles
Trail

Lake Tahoe Marathon

Midnight Express Ultra 72
October 08, 2016 The race has already taken place.
USA / Pacific / California / Tahoe City
Ultramarathon - 72 miles
Relay

Skyline to the Sea Marathon & 50km

Skyline to the Sea 50km
October 08, 2016 The race has already taken place.
USA / Pacific / California / Saratoga Gap, Los Gatos
Ultramarathon - 50 kilometers
Trail Pacific Trail Runs