2017 - 2018 USA Ultramarathon Calendar in December

Browse our Ultramarathon Calendar for races organized in USA during the month of December among 52 races.

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52 races

TARC Fells Trail Ultra

32M
December 02, 2017 Race day in 8 months
USA / New England / Massachusetts / Stoneham
Ultramarathon - 32 miles
Trail Tarc Trail Series

TARC Fells Trail Ultra

40M
December 02, 2017 Race day in 8 months
USA / New England / Massachusetts / Stoneham
Ultramarathon - 40 miles
Trail Tarc Trail Series

Caloosahatchee Ultra

Caloosahatchee Ultra 50K
December 02, 2017 Race day in 8 months
USA / South Atlantic / Florida / Alva
Ultramarathon - 50 kilometers
Trail

Frozen Trail Runfest

Frozen Trail Runfest 50K
December 09, 2017 Race day in 9 months
USA / Pacific / Oregon / Buford Park, Mt Pisgah - Eugene
Ultramarathon - 50 kilometers
Trail

Arctic Frog

Arctic Frog 50K
December 03, 2016 The race has already taken place.
USA / East North Central / Illinois / Libertyville
Ultramarathon - 50 kilometers

Calero Park Run

Calero Park 50K Run
December 03, 2016 The race has already taken place.
USA / Pacific / California / San Jose
Ultramarathon - 50 kilometers
Hilly Trail

Last Chance 50k Trail Run and Relay

December 03, 2016 The race has already taken place.
USA / South Atlantic / South Carolina / Witherbee Ranger Station, Cordesville
Ultramarathon - 50 kilometers
Trail Relay

McDowell Mountain Frenzy

McDowell Mountain Frenzy 50K
December 03, 2016 The race has already taken place.
USA / Mountain Region / Arizona / Fountain Hills
Ultramarathon - 50 kilometers
Trail Aravaipa Running

Tri States Relay

December 03, 2016 The race has already taken place.
USA / Mountain Region / Utah / Veyo
Ultramarathon - 50 miles
Relay

The North Face Endurance Challenge California

The North Face Endurance Challenge California 50K
December 03, 2016 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 50 kilometers
Trail

The North Face Endurance Challenge California

The North Face Endurance Challenge California 50 Mile
December 03, 2016 The race has already taken place.
USA / Pacific / California / San Francisco
Ultramarathon - 50 miles
Trail

Pullman Winter Ultra Series - December

50K
December 04, 2016 The race has already taken place.
USA / Pacific / Washington / Pullman
Ultramarathon - 50 kilometers

Civil War Relay

December 04, 2016 The race has already taken place.
USA / Pacific / Oregon / Eugene
Ultramarathon - 52 miles
Charity Road Running RLT Relay Races Relay

High Desert 50K Ultramarathon and 30K

High Desert 50K Ultramarathon
December 04, 2016 The race has already taken place.
USA / Pacific / California / Ridgecrest
Ultramarathon - 50 kilometers
Trail

Pine Mountain 40

December 04, 2016 The race has already taken place.
USA / South Atlantic / Georgia / Pine Mountain
Ultramarathon - 40 miles
Trail