Blackbeard’s Revenge 100 Ultra & Relay @ Historic Corolla Park, Corolla, NC, United States on 21 March 2026

The Tale of Blackbeard’s Revenge 100

Aye, ye ask why we call it Blackbeard’s Revenge? Pull up a chair, Matey, and hear this tale…

The Outer Banks be a fickle beast—temps can swing from 80 to 20, the wind’ll whip ye sideways, and though the roads be flat, they stretch on like the horizon, testin’ […]

Run Woodstock @ The Woodlands, Gregory, Michigan, United States on 06 September 2025

Get ready to set your soles free on a 140 acre incredible piece of pure Michigan forest and fields, not to mention… a beach! Century old white pines, old growth forests and meandering dirt two tracks make this place both magical and majestic! We know you are going to DIG it! The race course will […]

DWD Michigan @ The Woodlands, Gregory, Michigan, United States on 20 September 2025

Expect to be scratched, muddied and bruised by the beauty of this unpolished gem. Take yourself to the edge where life is full color… and dirty.

The 30K, 50K, and 50 Mile individual events are on Pure Michigan, runnable single track, gnarly trails! You won’t be disappointed. Expect to be scratched, muddied and bruised by […]

Run Woodstock @ The Woodlands, Gregory, Michigan, United States on 05 September 2025

Get ready to set your soles free on a 140 acre incredible piece of pure Michigan forest and fields, not to mention… a beach! Century old white pines, old growth forests and meandering dirt two tracks make this place both magical and majestic! We know you are going to DIG it! The race course will […]

Pines To Vines @ Waterloo Pinckney Trail, Jackson, Michigan, United States on 10 August 2025

Take a point-to-point trip through beautiful Michigan wilderness while you travel along the Waterloo-Pinckney Trail. Miles of pure bliss. You will not get bored as you venture west passing by swamps, meadows, lakes and forests. The course ends on a beautiful dirt road that takes you to Sandhill Crane Vineyards for a backyard beer and […]

Colorado 24 Hour Run @ Colorado Youth Outdoors, Fort Collins, Colorado, United States on 01 November 2025

Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your running journey. Want to see how far you can go in 6, 12 or 24 hours? Or achieve a new furthest distance? What about setting […]

Red Feather Trail Jamboree @ Ben Delatour Scout Ranch, Red Feather Lakes, Colorado, United States on 26 September 2025

Come enjoy the clean air and wild spaces of the Red Feather Lakes region in Northern Colorado! Take advantage of the opportunity to explore some new trails on the private land of the Ben Delatour Scout Camp and surrounding national forest. These courses are especially designed to be beginner (or PR) friendly with buttery smooth […]

Terra De Gigantes Ultramarathon @ Seia, Portugal on 15 January 2026

It’s not just another ultramarathon. It is a long way between the highest point in mainland Portugal and the Atlantic Ocean, in this case to Nazaré. A path of amazement, of encounter, of contact with traditions, but also of faith without the need to be a believer. It will be a very unique time. Crossing […]

Backyard Ultra Horizontes @ Proença a Nova, Portugal on 26 April 2025

The Horizontes Backyard Ultra it’s an official race on the calendar Backyard Ultra. An American concept created by Lazarus Lake, organizer of the famous and legendary Barkley Marathons in Frozen Head Nature Park in Tennessee.

The logic of this race is very simple, complete a loop of 6.706 km in a maximum time of 1 […]

Oh Meu Deus Ultra Trail @ Seia, Portugal on 06 June 2025

This journey through Serra da Estrela’s natural heritage is 14 years old! The longest distances have a geographical scope that covers almost the entire Natural Park. We don’t forget the people, the history and the traditions. We often pass through small villages where you can get to know the customs and traditions of the mountains.

[…]

PT281 Ultramarathon @ Belmonte Castle, Belmonte, Portugal on 06 June 2025

It’s a race where temperatures soar past 40º. The heat is stifling and many of the participants rate it as the hardest they’ve ever done. To be happy and one of the finalists in this race, you need to have a real capacity for autonomy, be self-sufficient and know how to navigate the entire route […]

Never Summer 100k/60k Trail Race @ State Forest State Park, Gould, Colorado, United States on 25 July 2025

The Never Summer 100km & 60km will take place almost entirely within the boundaries of State Forest State Park and run between the Never Summer Mountains on the northern border of Rocky Mountain National Park (RMNP) and the Medicine Bow Mountains to the north of Cameron Pass.

The first 20 miles of each race will […]

Quad Rock 50/25mi Trail Race @ Lory State Park, Bellvue, Colorado, United States on 10 May 2025

Welcome to the Quad Rock 50 and 25 mile trail races, an event put on by trail runners for trail runners.

Taking place on the trails and hills west of Fort Collins in Lory State Park and Horsetooth Mountain Park, the Quad Rock 25/50 will take you on a tour of the Fort Collins skyline, […]

DWD Devil’s Lake @ Devil’s Lake State Park, Barboo, Wisconsin, United States on 12 January 2025

The perfect midsummer road trip trail run! Just north of Madison lies Devil’s Lake, an area of amazing geological, ice age creation, the perfect backdrop for an adventure run that includes “The most dramatic aid station location in the world!”

All entries include post-race food and a brew, awards eligibility, marked course with aid and […]

DWD Gnaw Bone @ Brown County State Park, Nashville, Indiana, United States on 17 May 2025

For those of you unfamiliar with Brown County, Indiana, the terrain will bring you shock and awe! Vicious 600’ ridges, breathtaking natural beauty and wicked trails abound. Gnaw Bone is about one mile out of Nashville, IN, an artisan community with over 200 galleries. A picture postcard of a town and definitely worth a visit, […]

Trail Weekend @ The Woodlands At Bruin Lake, Gregory, MI, United States on 26 April 2025

Tackle the Potawatomi & Crooked Lake Trails with us as we celebrate 38 years of trail! The course is neither flat nor fast, but it is a beautiful loop with constant hills through Pinckney State Recreation Area. A portion of each entry fee will be donated to the John Rogucki Memorial Fund.

Don’t Fence Me In Trail Run @ Pioneer Park, Helena, Montana, United States on 10 May 2025

Twenty-five years ago, a race was born in the heart of Helena. The Don’t Fence Me In Trail Run began as a grassroots effort to showcase the work of Prickly Pear Land Trust. Don’t Fence Me In has become a cherished Helena tradition and an enduring symbol of community and conservation. All funds raised support […]

Barrel to Keg Relay @ Newport, Oregon, United States on 12 July 2025

Start at a vineyard and finish at a brewery in this fun and scenic relay run/walk.

Castle Alpine Trail Race @ Castle Mountain Resort, Alberta, Canada on 13 September 2025

Get into fall running mode and enjoy the Castle Mountain Resort Area on one of the most scenic race courses you’ll ever get to see. The Castle is a secluded gem of a place that everyone should make an effort to visit.

Castle Alpine Trail Race (CAT) combines wide open vistas, rugged single track, off-trail […]

The Divide 200 @ Castle Mountain Resort, Alberta, Canada on 12 September 2025

The stuff legends are made of… The culmination of 21 years of living, playing, and working in the Rocky Mountains. The Divide 200 is Canada’s first 200 mile race.

The route includes the Castle/Crowsnest/Flathead region of the southern Rockies. The race will celebrates our Rocky Mountain heritage, and highlights portions of the stunning Great Divide […]

Black Spur Ultra @ Kimberley Alpine Resort, Kimberley, BC, Canada on 23 August 2025

Black Spur Ultra (BSU) is wrought from the winding, technical single track that trail runners dream about. No pavement, big climbs through rugged terrain, immaculate trails, and stunning scenery. Hosted at Kimberley Alpine Resort, you can walk to the start line right from your hotel room. Kimberley is a secluded gem nestled between the Purcell […]

12th GlobalLimits – The Ancient Khmer Path @ Phnom Penh/Angkor, Cambodia on 28 November 2025

220 km – 6 stages

Elevate your running journey by blending the challenge of an epic race with unparalleled insights into a captivating ancient culture!

Delight in the wonder of connection as children from remote villages cheer you on, their eyes lighting up with awe. Immerse yourself in untouched nature and encounter diverse wildlife […]

6th GlobalLimits – The Hemisphere Crossing @ Sao Tomé, Sao Tome and Principe on 13 February 2026

200 km – 6 stages 130 km – 6 stages

+6.000m / – 6.000m +3000m / – 3.100m

The islands of São Tomé and Príncipe in the Gulf of Guinea offer a glimpse into forgotten plantations, elegantly built colonial houses, the spectacular tubular Pico Cão Grande, colorful natural beauty in the jungle, and unspoiled beaches. […]

Canadian Death Race @ Rocky Mountains, Grande Cache, Alberta, Canada on 02 August 2025

Since the start of the millennium, racers have come to the Canadian Rockies to cheat Death in one of the world’s toughest ultramarathons. The 118km course begins and ends on a 4200-foot plateau, passes over three mountain summits, and not only includes 4543m (14,905 feet) of elevation change but a major river crossing at the […]

Sinister 7 Ultra @ Crowsnest Pass, Blairmore, Alberta, Canada on 12 July 2025

Sinister 7 Ultra may be the greatest challenge of your life. The 100-mile (161km), 50-mile (80 km), and 50-km courses will take you through the most rugged, remote and beautiful terrain in Alberta’s stunning Rocky Mountains. With over 6,600m of elevation gain across the course, this race will punish those who are not prepared.

[…]