December Ultras in the USA
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Santa Barbara, CA
Santa Barbara Red Rock 40 & Marathon
Dec 8, 2018
Virginia Beach, VA
Seashore Nature Trail 50K
Dec 15, 2018
Tigard, OR
Operation Jack Northwest Run
Dec 8, 2018
Bluffton, SC
Buffalo Run
Dec 9, 2018
Eugene, OR
Frozen Trail Runfest
Dec 8, 2018
Fountain Hills, AZ
McDowell Mountain Frenzy Trail Runs
Dec 1, 2018
Falls of Rough, KY
Falls 100
Dec 1, 2018
Honolulu, HI
Hawaii Kai Ultra Run - Kalama Valley
Dec 16, 2017
Pine Mountain, GA
Pine Mountain Trail Run
Dec 1, 2018
San Jose, CA
Calero Park Run
Dec 1, 2018
Grapevine, TX
Perpetual Motion
Dec 1, 2018
Spartanburg, SC
One Epic Run
Dec 1, 2018
Tampa, FL
Ragnar Trail Alafia River
Dec 7, 2018
Baywood-Los Osos, CA
Spooner's Cove
Dec 9, 2018
Golden, CO
Sawmill Trail Runs
Dec 8, 2018
Blue Springs, MO
Dude, where's the trail? 50K Trail Run
Dec 1, 2018
Springfield, MO
Run for the Ranch
Dec 30, 2017
North Adams, MA
Fat Ass 50K
Dec 30, 2017
Huntsville, AL
Recover From The Holidays 50K
Dec 31, 2018
Ridgecrest, CA
OTHTC High Desert 50K Ultra & 30K
Dec 2, 2018
Rodeo Beach, CA
Rodeo Beach Trail Run
Dec 8, 2018
Libertyville, IL
Arctic Frog Endurance Run
Dec 1, 2018
Las Cruces, NM
Fiesta Series
Nov 29, 2018 - Day 1
Nov 30, 2018 - Day 2
Dec 1, 2018 - Day 3
Dec 2, 2018 - Day 4
Pullman, WA
Pullman Winter Ultras
Dec 3, 2017
Jan 20, 2018
Chattanooga, TN
Lookout Mountain 50 Miler
Dec 15, 2018
Conyers, GA
Austin Taylor Challenge
Dec 9, 2017
Woodside, CA
Woodside Ramble - Winter
Dec 15, 2018
Sherwood, WI
Run Your Past Off
Dec 31, 2017
Fort Walton Beach, FL
Round the Bay Relay and Ultra
Dec 29, 2018
San Francisco, CA
New Year's One Day
Dec 31, 2017
Ormond Beach, FL
Bulow Woods Trail Race and Ultra Marathon
Dec 8, 2018
Albion, IN
HUFF 50K Trail Run
Dec 29, 2018
San Antonio, TX
I Ran Flagship Marathons - Gabon
Dec 1, 2018
I Ran Flagship Marathons - Gambia
Dec 8, 2018
I Ran Flagship Marathons - Georgia
Dec 15, 2018
I Ran Marathons - Christmas
Dec 22, 2018
I Ran Flagship Marathons - Germany
Dec 23, 2018
Oak Harbor, WA
Deception Pass 50K
Dec 8, 2018
Fincastle, VA
Hellgate 100K
Dec 8, 2018
Albany, OR
Civil War Relay
Dec 2, 2018
Stoneham, MA
Tarc Fells Trail Ultra Winter
Dec 1, 2018
Ponte Vedra Beach, FL
Guana 50K and 12K Trail Races
Dec 2, 2018
Cambridge, OH
Bigfoot 50K & 10 Mile Challenge
Dec 8, 2018
Park Falls, WI
Tuscobia Winter Ultra
Dec 28, 2018
Brownstown, IN
Jackson County 50-50 Ultra
Dec 1, 2018
Honey Creek, IA
The Hitchcock Experience Endurance Runs
Dec 8, 2018
Missouri City, TX
Snowdrop Ultra 55 Hour Race & Relay
Dec 30, 2018
Burns, TN
Bell Ringer 50K/25K
Dec 8, 2018
Needville, TX
Brazos Bend 100
Dec 8, 2018
Ville Platte, LA
Loup Garou Trail Run
Dec 15, 2018
Santa Rosa Beach, FL
Winter Solstice Run
Dec 16, 2017
Los Altos, CA
Vista Verde Skyline Run
Dec 1, 2018
Bath, OH
Regal Beagle Ultra
Dec 2, 2018
Pilot Point, TX
Isle du Bois Trail Race
Dec 1, 2018
Carthage, MO
36 Hours Of Jack
Dec 8, 2018
Huger, SC
Last Chance Trail Run
Dec 1, 2018
Wakulla Springs, FL
Tallahassee Ultra Distance Classic
Dec 8, 2018
Fort Pierce, FL
Saint Lucie Skeeter Skoot
Dec 9, 2018
Blacksburg, SC
King of the Mountain 50K
Dec 1, 2018
Hyden, KY
Redbird Crest 100K
Dec 1, 2018
Hazel Green, AL
Awesome Possum
Dec 8, 2018
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Arctic Frog Endurance Run
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Dec 1, 2018Saturday
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50K, 25K, 15K trail run
Race Link
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Libertyville, IL
Lake County, IL
2. Calero Park Run
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Dec 1, 2018Saturday
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50K, 25K, 13.1M, 15K, 5K run | 32M, 16M, 9M, 2.8M trail run
Race Link
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San Jose, CA
Santa Clara County, CA
3. Dude, where's the trail? 50K Trail Run
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Dec 1, 2018Saturday
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50K, 30K trail run
Race Link
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Blue Springs, MO
Jackson County, MO
4. Falls 100
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Dec 1, 2018Saturday
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100M, 50M, 26.2M, 13.1M trail run
Race Link
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Falls of Rough, KY
Breckinridge County, KY
5. Fatass Ode to Bridge Ultra
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Dec 1, 2018Saturday
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50K, 8K run
Race Link
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Greenville, SC
Greenville County, SC
6. Fiesta Series
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Dec 1, 2018Saturday
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50K, 26.2M, 13.1M, 10K, 5K run
Race Link
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Las Cruces, NM
Dona Ana County, NM
7. I Ran Flagship Marathons - Gabon
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Dec 1, 2018Saturday
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50K, 26.2M, 13.1M, 10K, 5K run
Race Link
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San Antonio, TX
Bexar County, TX
8. Isle du Bois Trail Race
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Dec 1, 2018Saturday
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55K, 37K, 18K, 5M trail run
Race Link
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Pilot Point, TX
Denton County, TX
9. Jackson County 50-50 Ultra
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Dec 1, 2018Saturday
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50M, 50K, 10M trail run
Race Link
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Brownstown, IN
Jackson County, IN
10. King of the Mountain 50K
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Dec 1, 2018Saturday
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50K trail run
Race Link
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Blacksburg, SC
Cherokee County, SC
11. Last Chance Trail Run
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Dec 1, 2018Saturday
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50K, 25K trail run
Race Link
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Huger, SC
Berkeley County, SC
12. McDowell Mountain Frenzy Trail Runs
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Dec 1, 2018Saturday
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50M, 50K, 25K, 10M, 5M trail run
Race Link
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Fountain Hills, AZ
Maricopa County, AZ
13. One Epic Run
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Dec 1, 2018Saturday
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24H, 100K, 50K, 26.2M, 13.1M, 5K run
Race Link
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Spartanburg, SC
Spartanburg County, SC
14. Perpetual Motion
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Dec 1, 2018Saturday
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24H, 12H, 6H run
Race Link
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Grapevine, TX
Tarrant County, TX
15. Pine Mountain Trail Run
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Dec 1, 2018Saturday
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46M trail run
Race Link
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Pine Mountain, GA
Harris County, GA
16. Redbird Crest 100K
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Dec 1, 2018Saturday
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100K trail run
Race Link
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Hyden, KY
Leslie County, KY
17. San Joaquin River Trail 50K and 50 Mile
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Dec 1, 2018Saturday
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50M, 50K trail run
Race Link
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Friant, CA
Fresno County, CA
18. Tarc Fells Trail Ultra Winter
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Dec 1, 2018Saturday
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40M, 32M trail run
Race Link
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Stoneham, MA
Middlesex County, MA
19. Urban Ultra Houston
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Dec 1, 2018Saturday
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50K, 25K, 15K, 10K, 5K run
Race Link
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Houston, TX
Harris County, TX