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Event Distance(s) State / City
Across The Years
Across The Years is a fixed-time multiday running event celebrating the New Year. Runners have 24, 48, or 72 hours to cover as much distance as possible. Each runner is free to walk, stop, eat, and ...(continued)
72 Miles
48 Miles
24 Hours
Afton Trail Run
The start is located near the Interpretive Center, not far from the center of Afton State Park. 50K starts at 6:30 A.M. 25K starts at 7:00 A.M.
50 K
25 K
Ahnapee Summer Solstice 50 Mile Relay Run
50 mile team relay run on the beautiful Ahnapee State Trail. Join us for our second annual relay running event on June 20, 2014. Teams of 2-5 runners will complete 10 legs on the Ahnapee State Trail as they travel from Sturgeon Bay to Kewaunee, finishing at the fairgrounds in Luxemburg. All finishers will be treated to an after race party. Non-participants are welcome at the party, and tickets will be sold at the gate.
50 Mile
Sturgeon Bay
American River Endurance Run
It all started with a conversation between Sally Edwards and Mo Livermore back in 1979. At that time, The American River Ride, horse race started in Sacramento and finished in Auburn. When Mo described the trails used by the riders and horses of this event, Sally realized the course could be a challenging and beautiful 50-mile endurance run. And thus, a race was born. In 1980, nearly 200 runners toed the line at the Auburn Fair Grounds for the start of the inaugural AR50.
50 Mile
Ancient Redwood Running Festival
There is something for everyone with this festive event! 5 and 10 Mile courses, 6 Hour and 12 Hour Timed Events, 20 Mile and 50 Mile Relays, and more.
50 Mile
20 Miles
12 Hours
6 Hours
5 Miles

Angel Island New Years Day
Angel Island is a hilly, grass- and forest-covered island that provides spectacular views of Marin County, San Francisco, and the Golden Gate. Trails and roads circle the entire island and climb Mount Livermore.
50 K
25 K
Angeles Crest 100 Mile
The San Gabriel back country retains much of the natural beauty, if not the primitive wilderness of yesteryear. Thanks largely to the foresight and capable supervision of the U.S. Forest Service and hundreds of volunteers.
100 Mile
Antelope Canyon 50 Mile, 55 K and Half Marathon
50 Miler On this course you will experience two of the most photographed land features in the country- Antelope Canyon and Horseshoe Bend of the Colorado River. After traversing the desert sand and s ...(continued)
50 Mile
55 K
Half Marathon
Antelope Island Buffalo Run
Antelope Island State Park is on the largest island (28,000 acres) in the Great Salt Lake. There are about 45 miles of trails there with 500 head of buffalo to dodge. Sometime they move, sometimes they don't. Anyone in the Salt Lake area who's run these trails enjoys them
50 K
25 K
Salt Lake
A-OK 25K/50K
8:00am. start with a 7 hour time limit. 50 runner limit.
50 K
25 K
Are We Having Fun Yet?
50 K
North Carolina
Arkansas Traveler Trail 100M
The Arkansas Traveller 100 was founded and directed for ten years by Lou and Charley Peyton of Little Rock. The first running of the event was on October 5, 1991. In 1989, Lou Peyton was one of four women to complete ultrarunning’s Grand Slam—the first year this feat was accomplished by a female. It was the Peytons’ travels to these 100 milers in other states that provided the inspiration for the Traveller. They wished to organize a similar event to share the true ultra-running experience with their local friends and runners, and also to host a run where they could invite the many friends they had made at other races from across the country. It is this spirit of friendliness that has earned the Traveller the reputation of being one of the most hospitable races in the United States. Over 200 volunteers assist with the race--working the aid stations and in other areas to make sure runners receive everything they need to finish their 100-mile adventure.
100 Mile
Arrowhead 135 Winter Ultra
Bike, run, or ski 135 miles in subzero temperatures on a snowy multipurpose wilderness trail across the Arrowhead region of Northern Minnesota.
135 Miles
International Falls
Atlanta Fat Ass
Multiple loops on gentle, easy trails. No entry fee, but no wimps or whiners either.
50 K
Auburn Trail 34M/25K/8M
Overlook Park - Auburn California
34 Miles
25 K
8 Miles
Austin Rattler Trail Run
The Austin Rattler Trail Run takes participants on a double-loop course split between dirt roads and single tracks through the Texas countryside. With two distance options -- 25k and 75k -- this race offers the perfect starting point for the season.
75 K
25 K
Avalon Benefit
The Run will start at 5:00 a.m., Saturday January 14th at the foot of the green pier on Crescent Avenue. There is a 12-hour cut-off time for the race, so stragglers will be on their own after 5:00 p.m.
50 Mile
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