Trail Running
- 41
- Corsica Coast Race
- A multi-day race in Corsica, run or walk, over 6 days for 180km. Pictures, lodging details, registration, and rules.
- 42
- Devil O' The Highlands
- A 43 mile (69.3km) footrace starting from Tyndrum and finishing in Fort William in the highlands of Scotland.
- 43
- Lapland Ultra 100 K
- Race information, online registration, accommodations and travel details, photos, sponsor information, and a guest book. English, Swedish, German, and French versions. In Lapland, Finland.
- 44
- Glasshouse Mountains
- Australian 100 Mile trail run held annually in September. Details and entry forms can be downloaded.
- 45
- Kepler Challenge
- A 60 KM event located in Te Anau, New Zealand. Includes course maps, news items, results, pictures, and registration.
- 46
- Jungle Marathon
- A 200-kilometer event located in Manaus, Amazonia, Brazil. Provides registration details, an overview of the event, rules, and itinerary.
- 47
- Mountain Masochist 50 Mile Trail Race
- Provides race information, results, and race reports. Located in Lynchburg.
- 48
- Vermont 100 Endurance Run
- Each year, over 200 runners attempt to finish this hilly race under the 30-hour cutoff point. The site offers entry and course information, as well as prior years' results. It is part of the Grand Slam of ultra-running.
- 49
- The Grasslands Run
- 50, 25 and 10 milers. Located at LBJ National Grasslands Decatur. Information on entries and course descriptions.
- 50
- Strolling Jim 40 Mile Run
- Located in Wartrace with past results, pictures, related links and registration information.
- 51
- Oil Creek 100 Trail Runs
- Concurrent 50K, 50 and 100 mile loop trail races on the rugged Gerard hiking trail at Oil Creek State Park in northwest PA, site of the world's first oil boom in 1859.
- 52
- Tussey Mountainback 50 Mile Relay and Ultramarathon
- 50 Mile Relay and Ultramarathon in early October, run over mountain roads in the Rothrock State Forest near State College, Pennsylvania.
- 53
- Black Mountain Marathon and Mount Mitchell Challenge
- A 40 mile ultra-marathon and also a marathon event up and back down the mountain. Lists safety concerns, results, topographical maps, and pictures.
- 54
- Umstead 100 Mile Endurance Run
- Race takes place at Umstead State Park, near Raleigh and Cary in late March or early April since 1994. Provides entry and volunteer forms, race information, results, photographs, and archives.
- 55
- Carl Touchstone Memorial Mississippi 50 Trail Run
- Located just south of Laurel each March. Includes camping details, maps, policies, records, results, and photographs.
- 56
- JFK 50 Miler
- Lists current and past race participants, winners, forms and a list of historical sites along the run starting in Hagerstown.
- 57
- The Hat Run
- Located in Susquehanna State Park and is geared towards ultrarunners of all abilities. Includes results, runner statistics, news items, application forms, directions, and photographs.