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Running EventsUltramarathons

Ultramarathons

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.

66 events found
Valencia Trail Race

Saturday, Mar 26, 2022

Valencia Trail Race

LocationIndicator

Santa Clarita, California

Participants

10k, ultramarathon, half marathon

FilledTicket$120 – $180
Booking perksTrail
HeartOutline
SPASM Lake Chabot

Saturday, Apr 16, 2022

SPASM Lake Chabot

LocationIndicator

Castro Valley, California

Participants

ultramarathon, half marathon, marathon

FilledTicket$40 – $85
Booking perksTrail
HeartOutline
Cinderella Trail Run

Saturday, Jun 11, 2022

Cinderella Trail Run

LocationIndicator

Oakland, California

Participants

ultramarathon, marathon, half marathon

FilledTicket$40 – $75
Booking perksFlat trail
HeartOutline
San Luis Obispo Spartan Trail 50k, Half Marathon and 10k

Sunday, Mar 13, 2022

San Luis Obispo Spartan Trail 50k, Half Marathon and 10k

LocationIndicator

Santa Margarita, California

Participants

half marathon, 10k, ultramarathon

Star4

(1 reviews)

FilledTicketPrice TBC
Great atmosphereHilly trail
HeartOutline
Fourmidable 50k, 35k, Half Marathon & 13k

Saturday, Feb 19, 2022

Fourmidable 50k, 35k, Half Marathon & 13k

LocationIndicator

Auburn, California

Participants

ultramarathon, half marathon

FilledTicketPrice TBC
Trail
HeartOutline
Save Mount Diablo Trails Challenge

Saturday, Apr 9, 2022

Save Mount Diablo Trails Challenge

LocationIndicator

Walnut Creek, California

Participants

5k, 10k, ultramarathon, half marathon

FilledTicketPrice TBC
Flat trail
HeartOutline
Sly Park Lake Trail Run

Saturday, May 14, 2022

Sly Park Lake Trail Run

LocationIndicator

Pollock Pines, California

Participants

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

FilledTicketPrice TBC
Great sceneryFlat trail
HeartOutline
Monterey Spartan Trail 50k, Half Marathon & 10k

Sunday, Jun 5, 2022

Monterey Spartan Trail 50k, Half Marathon & 10k

LocationIndicator

Salinas, California

Participants

10k, half marathon, ultramarathon

FilledTicketPrice TBC
Hilly trail
HeartOutline
Sly Park Lake Trail Run (Summer)

Saturday, Aug 20, 2022

Sly Park Lake Trail Run (Summer)

LocationIndicator

Pollock Pines, California

Participants

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

FilledTicketPrice TBC
Great sceneryTrail
HeartOutline
Golden Gate Trail Run (Winter)
Booked 1 time this week

Saturday, Feb 5, 2022

Golden Gate Trail Run (Winter)

LocationIndicator

Marin County, California

Participants

ultramarathon, marathon, half marathon

Star5

(22 reviews)

FilledTicket$40 – $85
Great atmosphereHilly trail
HeartOutline
Jackpot Ultra Running Festival

Friday, Feb 18, 2022

Jackpot Ultra Running Festival

LocationIndicator

Henderson, Nevada

Participants

ultramarathon

FilledTicketPrice TBC
Flat road
HeartOutline
Redtail Ridge 5k, 10k, Half, 30k, & 50k

Saturday, Feb 19, 2022

Redtail Ridge 5k, 10k, Half, 30k, & 50k

LocationIndicator

Castro Valley, California

Participants

ultramarathon, half marathon, 10k, 5k

FilledTicketPrice TBC
Great sceneryHilly trail
HeartOutline
Salmon Falls 50K

Saturday, Feb 26, 2022

Salmon Falls 50K

LocationIndicator

Coloma, California

Participants

ultramarathon

FilledTicketPrice TBC
Trail
HeartOutline
Way Too Cool 50K Endurance Run

Saturday, Mar 5, 2022

Way Too Cool 50K Endurance Run

LocationIndicator

Cool, California

Participants

ultramarathon

FilledTicketPrice TBC
Trail
HeartOutline
Redwood Trail Run (Spring)
Booked 2 times this week

Saturday, Apr 2, 2022

Redwood Trail Run (Spring)

LocationIndicator

Oakland, California

Participants

ultramarathon, marathon, half marathon

FilledTicket$40 – $85
Hilly trail
HeartOutline
Horseshoe Lake Trail Runs
Booked 2 times this week

Sunday, May 1, 2022

Horseshoe Lake Trail Runs

LocationIndicator

La Honda, California

Participants

ultramarathon, half marathon

FilledTicket$45 – $85
Hilly trail
HeartOutline
Grizzly Peak Trail Run

Saturday, May 14, 2022

Grizzly Peak Trail Run

LocationIndicator

Berkeley, California

Participants

10k, half marathon, ultramarathon, 5k

FilledTicket$40 – $85
Hilly trail
HeartOutline
Devil's Slide Run

Sunday, May 22, 2022

Devil's Slide Run

LocationIndicator

Pacifica, California

Participants

ultramarathon, half marathon

FilledTicketPrice TBC
Hilly trail
HeartOutline
San Lorenzo River Trail Run

Saturday, Jun 18, 2022

San Lorenzo River Trail Run

LocationIndicator

Santa Cruz, California

Participants

half marathon, 10k, ultramarathon

FilledTicket$40 – $85
Trail
HeartOutline
Golden Gate Summer Trail

Saturday, Jul 9, 2022

Golden Gate Summer Trail

LocationIndicator

Mill Valley, California

Participants

ultramarathon, marathon, half marathon

Star4.5

(2 reviews)

FilledTicket$45 – $90
Great atmosphereHilly trail
HeartOutline
Crystal Springs Trail Run (Summer)

Saturday, Jul 30, 2022

Crystal Springs Trail Run (Summer)

LocationIndicator

Woodside, California

Participants

half marathon, ultramarathon, marathon

FilledTicketPrice TBC
Trail
HeartOutline
Bizz Johnson Trail Races

Saturday, Sep 3, 2022

Bizz Johnson Trail Races

LocationIndicator

Susanville, California

Participants

half marathon, ultramarathon, marathon, 10k

FilledTicket$30 – $100
Hilly trail
HeartOutline
Diablo Trail Run

Sunday, Sep 18, 2022

Diablo Trail Run

LocationIndicator

Clayton, California

Participants

ultramarathon, 10 miles, half marathon, marathon

FilledTicket$35 – $85
Hilly trail
HeartOutline
Lake Chabot Trail Runs

Saturday, Nov 5, 2022

Lake Chabot Trail Runs

LocationIndicator

Castro Valley, California

Participants

ultramarathon, half marathon, marathon

FilledTicket$40 – $85
Flat trail
HeartOutline
Showing 1 - 24 of 66 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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