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Event Distance(s) State / City
Dan Rossi Memorial Ultras
The Dan Rossi 100 Mile and 50 Mile Runs consist of multiple loops on a paved, fairly wide bicycle lane that is part of state route 542 in the Atwood Lake area of eastern central Ohio . 11 loops for the 100 mile. The course is rolling, with occasional views of the lake, some cows, some forest, some country neighbors.
100 Mile
50 Mile
Ohio
Sherrodsville
Dances With Dirt
The courses are hilly! Great trail running with some stupid spots…swamp and river crossings and junk & bumps to climb over!
100 K
50 Mile
50 K
Michigan
Hell
Dances With Dirt Florida
ultra, running, trail, medals, awards, tech shirts, food, aid
50 K
Half Marathon
10 K
Florida
Dade City
Dances with Dirt Ultra
50 Mile
50 K
Michigan
Hell
Dawn to Dusk to Dawn Ultras
50k, 12 hour, and 24 hour ultra events run on a track.
50 K
24 Hours
12 Hours
Pennsylvania
Sharon Hill


Deadman Peaks Trail Run
A remote, rugged, and rocky high desert out and back on the Continental Divide Trail through the wilderness of the Rio Puerco Valley
50 Mile
New Mexico
Cuba
DeCelle Memorial Lake Tahoe Relay
72 mile, 7 person Relay around Lake Tahoe.
72 Miles
California
So Lake Tahoe
Des Plaines River Trail Races
4th running of the DPR Trail Half Marathon, Marathon and DPR 50 Mile Ultra Marathon along the beautiful and fast Des Plaines River Trail in Lake County, Illinois. This is a truly special running course. For our longer distance runners it is the only Chicago area Ultra in the spring.
50 Mile
Marathon
Half Marathon
Illinois
Lincolnshire
Desert RATS Kokopelli 150
Desert RATS is a six day, fully supported stage race that covers a distance of approximately 143 miles
150 Miles
Colorado
Moab
Destin 50 Beach Ultra
50 mile, 50K or 50 mile relay races all taking place on the white sand beaches of Destin, FL to benefit the Special Operations Warrior Foundation.
50 Mile
50 K
Florida
Destin
DeTony Iron First 50K and 3 Person 50k Relay
50 K
Illinois
Willow Springs
Devil Mountain Ultra
This remote and legendary classic Ultra brings runners together for two days in the pristine forest of the South San Juan Mountains around Pagosa Springs. 7,500’ of climbing, 10,000’ of elevation, bon ...(continued)
50 Mile
50 K
Half Marathon
10 K
5 K
Colorado
PAGOSA SPRINGS
Devils Backbone 50 Miler
This is a graduate level run (yes, like Hardrock). It is almost unsupported and unmarked. That being said however, navigation should not be an issue. There are plenty of cairns and you primarily stay on the ridge, The "graduate" part is due to the requirement to carry what you need for 5 - 9 hours of running and once out on the course there is no easy way out until the turnaround. You are almost always above 9500 feet on a rocky (but beautiful) trail.
50 Mile
Montana
Bozeman
Diablo Trail Run
Mount Diablo provides spectacular views of the San Francisco Bay Area and surrounding valleys. The 4 mile course is relatively flat and fast within Mitchell Canyon. The longer events are mountainous a ...(continued)
50 K
California
Clayton
Dick Collins Firetrails 50 Mile Trail Race
The scenic trails, first class aid stations, impressive goody bags and prizes, and extraordinary volunteers make this an event you won’t want to miss. And, at NorCalUltras, we think everyone’s a winn ...(continued)
50 Mile
California
Castro Valley
Dirty Dozen and Half Dozen Endurance Run and Dirty 10K/5K
race 10K half 5K run walk hike bay medal shirt
12 Hours
10 K
6 Hours
5 K
California
Pinole
Dirty German Endurance Fest
This ultra trail race ( 25K, 50K & 50 Mile)s takes place within the city limits of Philadelphia, and therefore qualifies as an urban ultra marathon, but you will not find things like traffic, noise, bad air quality & concrete buildings here.
50 Mile
50 K
25 K
Pennsylvania
Philadelphia
Dogwood Canyon 50K-25K Trail Run
The Outdoor Fitness Festival hosts the 2nd annual Dogwood Canyon 50K-25K Trail Run. The course is set amid Dogwood Canyon Nature Park and beyond (in both MO & AR) with logging trails, hills, valleys, woods, fields, creeks and streams and more! Breathtaking views!
50 K
25 K
Missouri
Lampe
Door County Fall 50
50-mile solo ultra and team relay in Door County, Wisconsin, a scenic peninsula known as the "Cape Cod of the Midwest." Awards three deep male and female for Open (under 40), Masters, and Supermasters ...(continued)
50 Mile
Wisconsin
Sturgeon Bay
Double Chubb Trail Runs
The 50K run is two out-and- backs on the popular Chubb trail. The trail itself varies from a gravel service road, to a mostly dirt trail along the Meramec river, to a mile-long series of climbs, to finally a rolling trail that winds through the hills of the Meramec River.
50 K
25 K
Missouri
St. Louis
Double Dipsea
This race was Walt Stack's personal favorite. It is a handicap race because Walt strongly supported women and older people to continue to participate in the sport of running. It is a very specia ...(continued)
13.8 Miles
California
Stinson Beach
Double Trouble Trail Runs
30 K
15 K
Pennsylvania
Morgantown
Dude, Wheres the Trail?
50K run thru the woods around two lakes. Partly on crushed stone bike path, partly on poorly marked or non-existant trails. Also a 30K version. Carry a cell phone so we can find you when you get lost. ...(continued)
50 K
30 K
Missouri
Lees Summit
Duncan Ridge Trail 50K/30K
The Duncan Ridge Trail 50K/30K is one of the toughest 50Ks in the Southeast with more than 10,000 feet of elevation gain. The actual elevation profile is displayed in the logo, but that is just the “o ...(continued)
50 K
30 K
Georgia
Blairsville
DuPont State Forest 50K Trail Run
A 2 loop 50K course near Asheville, NC in the very beautiful DuPont State Recreational Forest. Runners will enjoy rolling single track and some gravel fire roads. The course is challenging with some t ...(continued)
50 K
10 K
North Carolina
Asheville
Durango Double
This course has been designed to be runner friendly - no killer hills here. Starting on College Mesa, the course quickly but gently drops 360 feet in elevation as you make your way to Main Avenue. This is the biggest elevation change on the course and from mile 5 on the route is flat to rolling and you don't climb back up the hill to Fort Lewis College.
50 K
Marathon
25 K
Half Marathon
Colorado
Durango
Durty Spur Trail Run
Texas Trail Run, 10K in Texas, 30K in Texas
30 K
10 K
Texas
Hamilton
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