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 […]

Scrumpy Skedaddle @ Almar Orchards, Flushing, Michigan, United States on 05 October 2025

Fall running out in the country is as good as it gets and Almar Orchards in Flushing is the real deal. This hard working Michigan family farm makes the award winning, organic, J.K.’s Scrumpy Hard Cider, the perfect post run remedy. Hard cider mavins travel from all over the world to come to visit the […]

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 […]

Oberun @ Wiard’s Orchard, Ypsilanti, Michigan, United States on 18 July 2025

Grab some friends, mark your calendar and get ready to celebrate summer at the OBERUN 5K! We can’t think of a better way to celebrate than a 5K dash/jog or walk to a beer garden presented by Bell’s Brewery serving up cold Oberon!

Pair this summer favorite with a bottle opener finisher’s medal and optional […]

Legend Trail Run @ Sleepy Hollow State Park, Laingsburg, Michigan, United States on 25 October 2025

Join us for The Legend 5 Mile, 10 Mile or 13.1 Mile run! Sleepy Hollow State Park has 2600 acres of hardwood forest, prairies grassland and the 410 acre Lake Ovid. This fun course is mostly grass covered, the perfect running surface! Some steep hills but none too long!

All entries include a finisher’s woodallion […]

Flirt With Dirt @ Maybury State Park, Northville, Michigan, United States on 02 August 2025

Flirt with Dirt is a thrilling trail running event that takes participants through scenic wooded paths filled with rolling hills, dirt trails, and natural obstacles. Designed for runners of all levels, it offers an exciting challenge in a fun, community-focused atmosphere. It’s the perfect blend of adventure, endurance, and a love for the outdoors! Join […]

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 […]

Staunton Rocks! Marathon & Half @ Staunton State Park, Pine, Colorado, United States on 23 August 2025

Welcome to the Staunton Rocks! Marathon & Half, an event put on by trail runners for trail runners.

Touring the renowned singletrack of Staunton State Park in Colorado’s Front Range Mountains southwest of Denver, the race will take you back in time as you glide by historic buildings and old milling operations. The flowing trails […]

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 […]

Lory Summer Trail Series @ Lory State Park, Bellvue, Colorado, United States on 05 August 2025

Join us each Tuesday evening in August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their toes into the trail racing waters, and to offer more experienced trail racers a chance to sharpen […]

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.

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Black Squirrel Half Marathon @ Lory State Park, Bellvue, Colorado, United States on 06 September 2025

The Black Squirrel Trail Half Marathon takes place on the wonderful trails of Lory State Park to the northwest of Fort Collins, CO.

The trail half marathon course offers a tour of the outer boundaries of Lory State Park, providing breathtaking views to the east of Horsetooth Reservoir, Fort Collins and the Great Plains; and […]

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 […]

Blue Sky Marathon & Half @ Blue Sky Trailhead, South Bay, Fort Collins, Colorado, United States on 18 October 2025

Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the Blue Sky courses take you on a north-south tour of the easternmost hogbacks of Northern Colorado’s Front Range mountains. With a moderate amount of elevation gain and loss and a variety of terrain, the route offers a little bit […]

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 […]

Island Time @ The Woodlands, Gregory, MI, United States on 06 June 2025

Celebrate summer with a vacation of a run. Take your time with the 24H, 12H, or 6H run, or the Last One Standing Challenge. A mostly trail loop will take you on a tour of the the beautiful property over and over and over again! Each loop gives you access to a fully stocked aid […]

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.

Black Toenail Friday Half Marathon and 7.5 Miler @ Cane Creek Mountains Natural Area – Pine Hill Trail Head, Snow Camp, North Carolina, United States on 28 November 2025

Run off the indulgent meal by racing the Black Toenail Friday race the Friday after Thanksgiving! This race offers a half marathon or 7.5 mile distance on the trails at the Cane Creek Mountains Natural Area – Pine Hill Trail Head. Make this race more fun by having the entire family sign up!

Viper 200 @ 105 S Germantown Pkwy, Cordova, TN, United States on 02 April 2025

Volunteer Register April 2 – 5, 2025 Viper 200 105 S Germantown Pkwy Cordova, TN • 200 Miler, 100 Miler, 100M Team of 4, 53K Website Calendar Entrants Directions Watch Registration closes: Wed, Mar 26 @ 11:59PM CT About the Race .Welcome to the ultimate test of endurance. This isn’t your average Sunday morning jog […]

Cobra Den Series @ S Walnut Bend Rd, Memphis, TN, United States on 21 June 2025

Ignite your competitive spirit with the exhilarating Cobra Den Trail Series, featuring four unique races amidst the stunning Tour De Wolf and Wolf River Trails in Memphis. Commencing with the striking Cape 5k and 10k on June 21, 2025, followed by the thrilling Samar 4 and 8 milers, the dynamic Caspian 5 and 10 milers […]

MoMoFo100k and 20 mile Fun Run @ 6220 Forest Rd, Martinsville, IN, United States on 06 June 2025

This 100km trail race will prove that there’s more than just corn in Indiana! Situated in Indiana’s beautiful Morgan Monroe State Forest, this evening-start event will have plenty to offer throughout the night with its old growth forests, natural rock formations, lakes, and creeks. Oh, and did we mention the hills? With about 7,500 feet […]