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Ultramarathons

US Ultramarathons: 2024 - 2025

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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.
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Top Ultramarathons in the US

Events that our community are currently loving

Valencia Trail Race
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IN 4 DAYS

Saturday, 23 Mar 2024

Valencia Trail Race

Location

Santa Clarita, California

Running

10k, ultramarathon, half marathon

Ticket$125 – $195
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Silver Moon Race - Kings River

Sunday, 21 Apr 2024

Silver Moon Race - Kings River

Location

Running

ultramarathon and more

Star5.0

(1 reviews)

Ticket$80 – $240
Booking perksGreat atmosphere
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Foot Levelers Blue Ridge Marathon Early Bird Registration

Wednesday, 20 Mar 2024

Foot Levelers Blue Ridge Marathon Early Bird Registration

Location

Roanoke, Virginia

Running

marathon, half marathon, 10k, ultramarathon, 5k and more

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Popular US Ultramarathons

Valencia Trail Race
ENTRIES CLOSE
IN 4 DAYS

Saturday, 23 Mar 2024

Valencia Trail Race

Location

Santa Clarita, California

Running

10k, ultramarathon, half marathon

Ticket$125 – $195
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Silver Moon Race - Kings River

Sunday, 21 Apr 2024

Silver Moon Race - Kings River

Location

Running

ultramarathon and more

Star5.0

(1 reviews)

Ticket$80 – $240
Heart
Foot Levelers Blue Ridge Marathon Early Bird Registration

Wednesday, 20 Mar 2024

Foot Levelers Blue Ridge Marathon Early Bird Registration

Location

Roanoke, Virginia

Running

marathon, half marathon, 10k, ultramarathon, 5k and more

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Gulf Coast Series - Day 3 (MS)

Wednesday, 20 Mar 2024

Gulf Coast Series - Day 3 (MS)

Location

Gulfport, Mississippi

Running

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

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Gulf Coast Series - Day 4 (FL)

Thursday, 21 Mar 2024

Gulf Coast Series - Day 4 (FL)

Location

Marianna, Florida

Running

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

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4X4X48 CHALLENGE

Friday, 22 Mar 2024

4X4X48 CHALLENGE

Location

Naperville, Illinois

Running

ultramarathon

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Palmetto Relay

Friday, 22 Mar 2024

Palmetto Relay

Location

Charleston, South Carolina

Running

ultramarathon

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Appalachian Series - Day 1 (AL)

Friday, 22 Mar 2024

Appalachian Series - Day 1 (AL)

Location

Eufaula, Alabama

Running

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

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HAT Run 50K

Saturday, 23 Mar 2024

HAT Run 50K

Location

Havre de Grace, Maryland

Running

ultramarathon

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Solvang Double Century

Saturday, 23 Mar 2024

Solvang Double Century

Location

Buellton, California

Running

ultramarathon

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2024 Wilmington Growler Relay

Saturday, 23 Mar 2024

2024 Wilmington Growler Relay

Location

Wilmington, North Carolina

Running

ultramarathon

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Blackbeard's Revenge 100

Saturday, 23 Mar 2024

Blackbeard's Revenge 100

Location

Corolla, North Carolina

Running

ultramarathon

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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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