2017 - 2018 North America Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in North America among 1579 races.

1,579 races

I Ran Marathons Christmas Lucky 12 days

50K
12/21/2017
USA / West South Central / Texas / San Antonio
Ultramarathon
Running

Tuscobia Winter Ultramarathon

160 Mile Run
12/28/2017 - 06:00
USA / East North Central / Wisconsin / Park Falls
Ultramarathon
Iditarod Trail Invitational Qualifier Trail Running

Tuscobia Winter Ultramarathon

80 Mile Run
12/29/2017 - 10:00
USA / East North Central / Wisconsin / Park Falls
Ultramarathon
Trail Running

Boyers Furnace

12/30/2017 - 06:00
USA / South Atlantic / Virginia / Fort Valley
Ultramarathon
Trail Running

The HUFF 50K Trail Run and Relay

HUFF 50K Trail Run
12/30/2017 - 08:00
USA / East North Central / Indiana / Albion
Ultramarathon
Trail Running

Recover from the Holidays

12/31/2017 - 08:00
USA / East South Central / Alabama / Huntsville Cross Country Park, Huntsville
Ultramarathon
Running

Redeye

01/01/2018 - 08:00
USA / South Atlantic / Virginia / Triangle
Ultramarathon
Forest Trail Running Solo

STRC Road Race Series

Road Race Series #Option 2 (NYD 5-miler, SPD 10K, Smile Mile, Red Baron Half, and P&G 5K) (STRC discount automatically applied, if applicable)
01/01/2018 - 12:00
USA / Mid-Atlantic / New York / Corning
Ultramarathon
Running

Bandera Trail Runs

Bandera 100km
01/06/2018 - 07:30
USA / West South Central / Texas / Bandera
Ultramarathon
Western States Qualifier Trail Running

Bandera Trail Runs

Bandera 50km
01/06/2018 - 07:30
USA / West South Central / Texas / Bandera
Ultramarathon
Trail Running

Croom Zoom

100K
01/06/2018 - 06:00
USA / South Atlantic / Florida / Brooksville
Ultramarathon
Trail Running

Croom Zoom

100M
01/06/2018 - 06:00
USA / South Atlantic / Florida / Brooksville
Ultramarathon
Trail Running