Trail Running calendar near Denver 2025-2026

The Mountaineer Rumble is a challenging trail running event held at Kings Mountain State Park in Clover, South Carolina. It offers multiple race distances including a 10 Mile, 50K, 100K, and a 100 Mile ultra. The course features a 31.1-mile loop showcasing scenic trails such as the CCC Multi-Use Tra..

The Unforeseen is a unique ultrarunning event held at Reedy Creek Nature Preserve in Charlotte, North Carolina. The race features a random distance determined by a dice roll just before the start, ranging from 4.5 to 27 miles, with each lap measuring 2.25 miles. The course consists of flat gravel an..

The Lake Haigler 12-Hour is a night trail running event held at the Anne Springs Close (ASC) Greenway in Fort Mill, South Carolina. Scheduled for November 22, 2025, the race features a 5K loop course around and near Lake Haigler. Participants run continuously from noon to midnight, aiming to complet..

The High Country Turkey Trot 10k is part of the 15th Annual High Country Turkey Trot held in Boone, North Carolina, at Clawson-Burnley Park. This event features a scenic 10k timed trail race along the Boone Greenway and Kennedy Trails, offering mostly grass and wooded trail terrain with some paved s..

The Derby 50K in Ellerbe, North Carolina, is a low-key ultramarathon covering 31.5 miles over three loops of rolling hills on a mix of asphalt and dirt roads. The course starts and finishes at the Derby Community Building and is marked with yellow arrows and signs, though runners must remain cautiou..

One Epic Run is a unique 24-hour running event taking place at Croft State Park in Spartanburg, South Carolina. Scheduled for December 6-7, 2025, this race invites participants to embrace the challenge of running on a scenic 5k loop, with a focus on camaraderie and self-timed laps. Runners are encou..

The Lake Norman State Park Trail Race, held in Troutman, NC, offers two challenging trail running options: a 30K and a 50K. Both races feature smooth, rolling single-track trails with no repeated loops, providing a fresh experience throughout. The 30K course includes about 1,500 feet of elevation ga..

The Old Fort Strong Endurance Festival, held at Camp Grier near Old Fort, NC, is a trail running and mountain biking event featuring 3, 6, and 12-hour races. The festival offers a vibrant atmosphere with live music, vendors, and guest speakers from the trail running and mountain biking communities...

The Dirty Santa Trail Run is a 5-mile trail race held annually in Lenoir, North Carolina, serving as the final event in the Foothills Run Series presented by UNC Ortho. The course begins and ends at the Lenoir Rotary Soccer Complex and features nearly 3 miles of single-track trail on Zack's Fork Mou..

The Beast of the East 100 is an ultramarathon event held in Kings Mountain, North Carolina, featuring multiple race distances including a 100-mile, 100K, 50-mile, marathon, and half marathon. The courses traverse the entire Crowders Mountain trail system, summiting both peaks and offering scenic vie..

The Pilot Mountain Goat is a challenging trail running event held at Pilot Mountain State Park in Pinnacle, North Carolina. It offers two race distances: a 3-mile and a 7-mile course, both starting at the campground and finishing at the mountain's summit. Runners ascend trails such as Grindstone, Mo..

The Frosty Cox 6 Hour Trail Race, held in Concord, North Carolina, offers runners a challenging and scenic experience on a private trail network. The course features a 6.2-mile loop composed of 95% singletrack and 5% jeep road, with 1,350 feet of elevation gain per lap. Participants navigate creek c..

Groundhog's Lap Race is a challenging endurance running event held at Haw River State Park Iron Ore Belt Access in Greensboro, North Carolina. Participants run loops on the 3.2-mile Great Blue Heron single-track trail through the woods. The race offers multiple time-based options: 3-hour, 6-hour, an..

The Uwharrie Mountain Run is an annual trail running event held in central North Carolina’s Uwharrie National Forest near Ophir, NC. Celebrating its 35th edition, the race offers challenging winter single-track trail runs with distances of 8, 20, and 40 miles. The course features natural obstacles s..

The Stone Mountain Massacre is a challenging trail running event held in Roaring Gap, North Carolina, featuring distances of 50K, 25K, and 8 miles. The 50K race follows a point-to-point loop through Stone Mountain State Park trails and the Mountain to Sea Trail, with an elevation gain of 1,530 feet..

The Mill Stone 50K is a challenging trail ultramarathon held at the scenic Anne Springs Close (ASC) Greenway in Fort Mill, South Carolina. The race features three 10.5-mile loops of mostly single-track, technical trails with some gravel and dirt paths, including at least two creek crossings. The cou..

The Land and Lakes Relay is an annual team running event held in North Carolina, starting at Warren Wilson College in East Asheville and finishing at Fonta Flora Brewery-Whippoorwhill Farm near Lake James. The relay covers a scenic course passing through Swannanoa, Black Mountain, Old Fort, and Mari..

Perennial: A Time Based Endurance Run is a unique timed running event held at the scenic Daniel Stowe Botanical Garden in Belmont, North Carolina, just minutes from Charlotte. Participants choose from 3-hour, 6-hour, or 10-hour race options, running multiple laps of a roughly 5K loop featuring mostl..

The Naked Mountain Ultra is a trail running event held at Morrow Mountain State Park in Albemarle, North Carolina, featuring distances of 50 miles, 25 miles, and 10 miles. The course traverses four of the park's mountain peaks within the Uwharrie Mountains, offering runners a challenging experience..

The Camp Croft 50K, 50 Miler, and 100 Miler is a trail running event held at Croft State Park in Spartanburg, South Carolina. Participants run multiple loops of a 10.05-mile course featuring the Fainforest Creek Connector and Southside Trail Loop, which offer a mix of flat sections, rolling hills, a..