2015 - 2016 USA Trail Ultramarathon Calendar in December

Browse our Ultramarathon Calendar for races organized in USA during the month of December bearing the tag Trail among 35 races.

35 races

Calero Park Run

Calero Park 50K Run

  • December 05, 2015 - 08:00
  • North America | USA | Pacific | California | San Jose
  • Ultramarathon - 50 kilometers
  • Hilly Trail

Caloosahatchee Ultra

Caloosahatchee Ultra 50K

  • December 05, 2015
  • North America | USA | Florida | Alva
  • Ultramarathon - 50 kilometers
  • Trail

Hitchcock Hundred

Hitchcock Hundred 100 Miler

  • December 05, 2015 - 05:00
  • North America | USA | Iowa | Honey Creek
  • Ultramarathon - 100 miles
  • Trail

Hitchcock Hundred

Hitchcock Hundred 50 Miler

  • December 05, 2015 - 19:00
  • North America | USA | Iowa | Honey Creek
  • Ultramarathon - 50 miles
  • Trail

Isle du Bois Trail Run

Isle du Bois 54 km Trail Run

  • December 05, 2015 - 07:30
  • North America | USA | West South Central | Texas | Pilot Point
  • Ultramarathon - 54 kilometers
  • Trail

McDowell Mountain Frenzy

McDowell Mountain Frenzy 50K

  • December 05, 2015 - 07:00
  • North America | USA | Mountain Region | Arizona | Fountain Hills
  • Ultramarathon - 50 kilometers
  • Trail Aravaipa Running

TARC Fells Trail Ultra

TARC Fells Trail Ultra 32M

  • December 05, 2015
  • North America | USA | Massachusetts | Stoneham
  • Ultramarathon - 32 miles
  • Trail Tarc Trail Series

TARC Fells Trail Ultra

TARC Fells Trail Ultra 40M

  • December 05, 2015
  • North America | USA | Massachusetts | Stoneham
  • Ultramarathon - 40 miles
  • Trail Tarc Trail Series

The North Face Endurance Challenge California

The North Face Endurance Challenge California 50K

  • December 05, 2015 - 07:00
  • North America | USA | Pacific | California | San Francisco
  • Ultramarathon - 50 kilometers
  • Trail The North Face Endurance Challenge

The North Face Endurance Challenge California

The North Face Endurance Challenge California 50 Mile

  • December 05, 2015 - 05:00
  • North America | USA | Pacific | California | San Francisco
  • Ultramarathon - 50 miles
  • Trail The North Face Endurance Challenge

The Guana River 50K Trail Run

  • December 06, 2015 - 07:00
  • North America | USA | South Atlantic | Florida | South Ponte Vedra
  • Ultramarathon - 50 kilometers
  • Trail Relay

Bigfoot 50K

  • December 12, 2015 - 08:00
  • North America | USA | East North Central | Ohio | Salt Fork State Park, Lore City
  • Ultramarathon - 50 kilometers
  • Trail Western Reserve Racing

Brazos Bend 100

Brazos Bend 100 Miler

  • December 12, 2015 - 06:00 Inaugural race
  • North America | USA | Texas | Needville
  • Ultramarathon - 100 miles
  • Fast Flat Fun Trail Relay

Brazos Bend 100

Brazos Bend 50 Miler

  • December 12, 2015 - 06:00 Inaugural race
  • North America | USA | Texas | Needville
  • Ultramarathon - 50 miles
  • Fast Flat Fun Trail

Frozen Trail Runfest

Frozen Trail Runfest 50K

  • December 12, 2015 - 09:00
  • North America | USA | Pacific | Oregon | Buford Park, Mt Pisgah - Eugene
  • Ultramarathon - 50 kilometers
  • Trail