2017 - 2018 USA Ultramarathon Calendar in September

Browse our Ultramarathon Calendar for races organized in USA during the month of September among 166 races.

166 races

Forrest Gump Challenge

Forrest Gump Challenge 50 Mile Ultra-marathon
September 02, 2017 Race day in 2 months
USA / West North Central / Missouri / Reeds Spring
Ultramarathon - 50 miles
Charity

Iron Mountain Trail Runs

Iron Mountain 30 mile Trail Run
September 02, 2017 Race day in 2 months
USA / South Atlantic / Virginia / Damascus
Ultramarathon - 30 miles
Trail

Iron Mountain Trail Runs

Iron Mountain 50 mile Trail Run
September 02, 2017 Race day in 2 months
USA / South Atlantic / Virginia / Damascus
Ultramarathon - 50 miles
Trail

Last Man Standing Ultramarathon

September 02, 2017 Race day in 2 months
USA / New England / Maine / New Gloucester
Ultramarathon - 100 miles
Trail

Tantalus Triple Trek

September 02, 2017 Race day in 2 months
USA / Pacific / Hawaii / O'ahu
Ultramarathon - 30 miles
Trail

The Pinellas Trail Challenge

September 02, 2017 Race day in 2 months
USA / South Atlantic / Florida / St. Petersburg
Ultramarathon - 46 miles
Flat Urban Trail

The Ring - Massanutten Trail Circuit Run

September 02, 2017 Race day in 2 months
USA / South Atlantic / Virginia / Front Royal
Ultramarathon - 71 miles
Trail

Rock Run Nantucket

September 02, 2017 Race day in 2 months
USA / New England / Massachusetts / Nantucket
Ultramarathon - 50 miles
Relay

The Rut

The Rut 50K
September 02, 2017 Race day in 2 months
USA / Mountain Region / Montana / Big Sky
Ultramarathon - 50 kilometers
UTMB Qualifier Trail Mountain

Sporty Diva's Bad Azz Back to Back at Western Chehalis Trail

Day Two- (September 7) 50k
September 03, 2017 Race day in 2 months
USA / Pacific / Washington / Lacey
Ultramarathon - 50 kilometers

Lake Michigan Trail Marathon

Lake Michigan Trail 50K
September 03, 2017 Race day in 2 months
USA / East North Central / Wisconsin / Milwaukee County Parks
Ultramarathon - 50 kilometers
Charity Trail

Woodstock Festival of Races

Hallucination 100 Mile
September 08, 2017 Race day in 2 months
USA / East North Central / Michigan / Pinckney
Ultramarathon - 100 miles
Hilly Trail Midwest Grand Slam of Ultrarunning Western States Qualifier