May
30
Mohican Trail 100-50-Marathon 2026
The fifth-oldest ultra race in North America winds 95% on trail through the lush 5,000-acre Mohican Memorial State Forest. As…
Presented by UTMB World Series
Trail Running Events
66 upcoming events
May
30
Worlds End Ultramarathon 2026
This 100K traverse through Pennsylvania’s Endless Mountains delivers 64 miles of technical single-track terrain that earned its reputation as one…
Presented by Western States 100 Qualifier
Jun
6
Old Dominion 100 2026
Founded in 1979 by Pat and Wayne Botts, the Old Dominion 100 stands as one of America’s oldest continuously held…
Presented by Grand Slam of Ultra-Running
Jun
13
Kettle Moraine 100 2026
This classic ultra marathon launched in 1996 serves as the second leg in the Midwest Grand Slam of Ultrarunning Series…
Presented by Western States 100 Qualifier
Jun
19
Bighorn Trail Run 2026
The Bighorn Trail Run stands as one of the most demanding ultramarathons in the Rocky Mountains, threading through the remote…
Presented by UTMB World Series
Jun
19
Leadville Trail 100 Run Camp 2026
This intensive three-day training camp prepares runners for the legendary Leadville Trail 100, offering guided exploration of key course sections…
Presented by Leadville Race Series
Jun
27
Leadville Trail Marathon and Heavy Half 2026
The Leadville Trail Marathon and Heavy Half put you through arguably the nation’s toughest and highest-altitude marathon experience. The route…
Presented by Leadville Race Series
Jun
27
Western States 100 2026
The world’s oldest 100-mile trail race, Western States has been testing runners since 1974 on a demanding point-to-point course from…
Presented by UTMB World Series
Jul
10
Hardrock 100 Endurance Run 2026
The Hardrock 100 Endurance Run covers 102.5 miles with 33,197 feet of climbing and descent through Colorado’s San Juan Range…
Presented by Rocky Mountain Slam Series
Jul
11
XTERRA Snowdonia Eryri 2026
Set in Snowdonia National Park’s dramatic landscape of rugged mountains, glacial valleys, and dark lakes, this event serves as host…
Presented by Always Aim High Events
Jul
11
XTERRA Trail Run World Championship 2026
The crown jewel of the global XTERRA Trail Run World Series, this championship draws elite and amateur trail runners from…
Presented by Xterra Worldwide Trail Series
Jul
11
Silver Rush 50 Run 2026
The Silver Rush 50 Run covers 50 miles and 7,942 feet of elevation gain through Colorado’s high Rocky Mountain mining…
Presented by Life Time Events
Jul
11
Ironstone 100k 2026
The Ironstone 100K stands as one of the most unforgiving ultramarathons in the Mid-Atlantic, earning its reputation through a combination…
Presented by Eastern States Trail Endurance Alliance
Jul
17
Vermont 100 Endurance Race 2026
The Vermont 100 is the only 100-mile ultramarathon run concurrently with a horse race, creating a unique atmosphere where runners…
Presented by Grand Slam of Ultra-Running
Jul
18
Tahoe Rim Trail Endurance Runs (TRTER) 2026
The Tahoe Rim Trail Endurance Runs takes place on one of America’s most scenic high-altitude loop trails, offering 50K, 56-mile,…
Presented by TRTER
Jul
18
Power of Four Trail Run 2026
This challenging mountain trail run connects the four peaks of the Aspen Snowmass area—Aspen Mountain, Aspen Highlands, Buttermilk, and Snowmass—across…
Presented by Aspen Snowmass Events & Experiences
Jul
25
Enchanted Forest Trail Races 2026
Gemini Adventures brings two challenging trail runs through Carson National Forest in Red River, New Mexico. The Marathon covers 25…
Presented by Gemini Adventures
Jul
25
Grand Mesa Ultras 2026
Set against Grand Mesa, one of the world’s largest flat-top mountains, this trail running event combines technical high-altitude terrain with…
Presented by Best Slope Events
Jul
25
Burning River Endurance Run & Relay 2026
The Burning River Endurance Run follows the valley carved by the Cuyahoga River through Northeast Ohio’s most scenic terrain, including…
Presented by Western Reserve Racing
Jul
25
Tushars Mountain Runs 2026
The Tushars Mountain Runs delivers exactly what it promises: one of the most technically demanding and visually spectacular mountain races…
Presented by Aravaipa Running
Aug
1
Angeles Crest 100 2026
The Angeles Crest 100 has challenged trail runners since 1986 through the rugged San Gabriel Mountains of Southern California. What…
Presented by Team AC100
Aug
1
Emerald Mountain Epic Trail 2026
The Emerald Mountain Epic Trail runs on Sunday as part of a two-day mountain bike and trail running festival that…
Presented by Emerald Mountain Epic
Aug
3
TransRockies Run 2026
This six-day stage race traverses 120 miles of Colorado’s most rugged backcountry with over 20,000 feet of elevation gain, running…
Presented by TransRockies Race Series
Aug
8
Eastern States 100 2026
This 103-mile single-loop trail race completes the Pennsylvania Triple Crown of mountain running, circumnavigating Pine Creek through the remote wilderness…
Presented by Western States 100 Qualifier