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Running EventsUltramarathons

Ultra Marathons in the USA

Ultramarathons, or ultras, are any running races beyond the standard marathon distance of 26.2 miles (or 42.2k). The most common ultra distances are 50k, 100k, 50 miles, or 100 miles, but each event is unique in terms of distance and terrain. The International Association of Athletics Federation recognises world records at ultramarathon events that have a distance of 100km. There are even 24hr ultramarathons, where the distance is unlimited, or multiday ultras, where the distance can extend beyond 1000km. There are a couple of city-based ultramarathons, but most ultras make the most of the USA's stunning scenery and landscapes. A lot of these events go off-road and require trail-running over difficult terrain with steep climbs or along rugged coastlines. There are over 1,500 ultramarathon events in the USA. One of the most famous and most difficult events is the Badwater Ultramarathon, which is 135 miles long through the searing heat and arduous terrain of Death Valley.

59 events found
Valencia Trail Race

Saturday, 25 Mar 2023

Valencia Trail Race

LocationIndicator

Santa Clarita, California

Participants

10k, ultramarathon, half marathon

FilledTicket$100 – $160
Booking perksTrail
Heart
Silver Moon Race Reedley

Saturday, 8 Apr 2023

Silver Moon Race Reedley

LocationIndicator

Reedley, California

Participants

ultramarathon

Star5

(1 reviews)

FilledTicket$80 – $190
Booking perksGreat atmosphereTrail
Heart
No Name 5030

Saturday, 3 Dec 2022

No Name 5030

LocationIndicator

Agoura Hills, California

Participants

5k, ultramarathon

FilledTicketPrice TBC
Great sceneryFlat trail
Heart
Calero Trail Run (Winter)

Saturday, 3 Dec 2022

Calero Trail Run (Winter)

LocationIndicator

San Jose, California

Participants

5k, 10k, half marathon, marathon, ultramarathon

FilledTicketPrice TBC
Hilly trail
Heart
Anza Borrego Cuyamaca 50 Mile

Saturday, 3 Dec 2022

Anza Borrego Cuyamaca 50 Mile

LocationIndicator

Julian, California

Participants

ultramarathon

FilledTicketPrice TBC
Flat trail
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Sawmill Trail Runs

Saturday, 10 Dec 2022

Sawmill Trail Runs

LocationIndicator

Golden, Colorado

Participants

ultramarathon

FilledTicketPrice TBC
Great sceneryTrail
Heart
Walt Disney World Marathon Weekend

Thursday, 5 Jan 2023

Walt Disney World Marathon Weekend

LocationIndicator

Orlando, Florida

Participants

5k, 10k, half marathon, marathon, ultramarathon

FilledTicketPrice TBC
Great sceneryFlat road
Heart
Croom Zoom 25k, 50k and 100k

Saturday, 7 Jan 2023

Croom Zoom 25k, 50k and 100k

LocationIndicator

Brooksville, Florida

Participants

ultramarathon

FilledTicketPrice TBC
Heart
Avalon Benefit 50k/50 Mile Run

Saturday, 7 Jan 2023

Avalon Benefit 50k/50 Mile Run

LocationIndicator

Avalon, California

Participants

ultramarathon

FilledTicketPrice TBC
Hilly road
Heart
SD50 Trail Marathons

Saturday, 14 Jan 2023

SD50 Trail Marathons

LocationIndicator

Escondido, California

Participants

ultramarathon, marathon, half marathon

FilledTicketPrice TBC
Heart
Rocks and Roots Winter Trail Series - January

Sunday, 15 Jan 2023

Rocks and Roots Winter Trail Series - January

LocationIndicator

Lewis Center, Ohio

Participants

ultramarathon, 10k

FilledTicketPrice TBC
Heart
Clearwater Marathon & Running Festival

Saturday, 28 Jan 2023

Clearwater Marathon & Running Festival

LocationIndicator

Clearwater, Florida

Participants

5k, half marathon, marathon, ultramarathon

FilledTicketPrice TBC
Heart
Arches Ultra

Saturday, 28 Jan 2023

Arches Ultra

LocationIndicator

Moab, Utah

Participants

half marathon, ultramarathon

FilledTicketPrice TBC
Heart
Groundhog Day Marathon

Friday, 3 Feb 2023

Groundhog Day Marathon

LocationIndicator

Grand Rapids, Michigan

Participants

marathon, half marathon, ultramarathon

Star5

(10 reviews)

FilledTicketPrice TBC
Great atmosphere
Heart
Piney Woods Trailfest

Saturday, 4 Feb 2023

Piney Woods Trailfest

LocationIndicator

New Caney, Texas

Participants

5k, 10 miles, ultramarathon

FilledTicketPrice TBC
Great sceneryTrail
Heart
Moab's Red Hot Ultra

Saturday, 18 Feb 2023

Moab's Red Hot Ultra

LocationIndicator

Moab, Utah

Participants

ultramarathon

FilledTicketPrice TBC
Heart
The Ranch 50k & Half Marathon

Saturday, 18 Feb 2023

The Ranch 50k & Half Marathon

LocationIndicator

Escondido, California

Participants

ultramarathon, half marathon

FilledTicketPrice TBC
Trail
Heart
Rocks and Roots Winter Trail Series - February

Sunday, 19 Feb 2023

Rocks and Roots Winter Trail Series - February

LocationIndicator

Lewis Center, Ohio

Participants

ultramarathon, 10k

FilledTicketPrice TBC
Heart
The Cowtown Marathon

Saturday, 25 Feb 2023

The Cowtown Marathon

LocationIndicator

Fort Worth, Texas

Participants

ultramarathon, marathon, half marathon, 10k, 5k

FilledTicketPrice TBC
Heart
Trail Trashed Ultra

Saturday, 4 Mar 2023

Trail Trashed Ultra

LocationIndicator

Henderson, Nevada

Participants

ultramarathon, marathon, half marathon, 10k, 5k

FilledTicketPrice TBC
Heart
Labor of Love

Saturday, 11 Mar 2023

Labor of Love

LocationIndicator

Las Vegas, Nevada

Participants

ultramarathon, half marathon, 10k, 5k

FilledTicketPrice TBC
Flat road
Heart
Old West 50k, Marathon & Half Marathon

Saturday, 11 Mar 2023

Old West 50k, Marathon & Half Marathon

LocationIndicator

Julian, California

Participants

ultramarathon, marathon, half marathon

FilledTicketPrice TBC
Flat trail
Heart
Chanoko Trail Runs: 50k, 31k & 5 Miles

Saturday, 11 Mar 2023

Chanoko Trail Runs: 50k, 31k & 5 Miles

LocationIndicator

Granite Bay, California

Participants

ultramarathon

Star5

(2 reviews)

FilledTicketPrice TBC
Great atmosphereHilly road
Heart
Behind the Rocks

Saturday, 25 Mar 2023

Behind the Rocks

LocationIndicator

Moab, Utah

Participants

ultramarathon, 10 miles

FilledTicketPrice TBC
Heart
Showing 1 - 24 of 59 events

About ultramarathons in the USA

Ultramarathons, or ultra runs, are endurance running races or treks beyond the standard marathon distance of 26.2 miles (42.2k). The most common distances for ultra running are 50k, 100k, 50 miles, or 100 miles (aka centurion races). Ultras take place on roads or trails across the US, and some last for 24 hours or multiple days. Some multi-day stage races are even self-sufficient, where runners must carry all of there equipment and provisions with them for the duration of the race.

What are the best USA ultra marathons?

There are over 1,500 ultra marathon events in the USA. The best ultra marathons make the most of the USA's spectacular scenery, including coasts, deserts, mountains, and national parks. The Golden Gate Trail Run is one of the best rated ultra marathon events on our list. The Badwater 135 is seen as one of the world's toughest and hardest ultra marathons, going through Death Valley.

How long should I train for an ultramarathon?

It is important to devote a significant amount of time and effort to training if you are wanting to complete an ultramarathon. Everybody has different levels of fitness and the race distances vary, so it is difficult to be precise with training plans. Most first-time ultrarunners will already have lots of running experience, so 6-10 weeks of specific training should get you ready for a 50k ultra. During your training, it is also important to get used to in-race nutrition and running on trails.

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