An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of 42.195 kilometres. Various distances are raced competitively, from the shortest common ultramarathon of 31 miles (50 km) to over 200 miles (320 km). 50 km and 100 km are both World Athletics record distances, but some 100 miles (160 km) races are among the oldest and most prestigious events, especially in North America.
Ann Trason is an American ultramarathon runner from Auburn, California. She set 20 world records during her career. Her world record of 5:40:18 at the 50 mile distance, set in 1991, was unbeaten until 2015. As of her induction into the Ultrarunning Hall of Fame in 2020, she was considered by many to be the most successful female ultrarunner of all time.
The Western States Endurance Run, known commonly as the Western States 100 or Western States, is a 100.2-mile (161 km) ultramarathon that takes place on California's Sierra Nevada Mountains trails each year on the last full weekend of June. Western States is the oldest and one of the most competitive ultramarathons in the United States, and is administered by the nonprofit Western States Endurance Run Foundation.
The Leadville Trail 100 Run is an ultramarathon held annually on rugged trails and dirt roads near Leadville, Colorado, through the heart of the Rocky Mountains. First run in 1983, the race course climbs and descends 15,600 feet (4,800 m), with elevations ranging from 9,200 to 12,620 feet. In most years, fewer than half the starters complete the race within the 30-hour time limit.
Nikki Kimball is an American distance runner specializing in the Ultramarathon. She ran her first 100-mile race at the Western States 100 Mile Endurance Run in 2004, and was the female winner. She was the winning female at Western States again in 2006 and 2007, becoming only the third woman to win Western States three times. In 2014, she won the Marathon Des Sables multi-stage endurance race on her first attempt. Prior to running, her main sport was cross-country skiing. She was crewed at the 2007 Western States by U.S. Senator Max Baucus of Montana, where Kimball lives. She lives in Bozeman, Montana.
Karl Meltzer is an ultrarunner and ultrarunning coach based in Sandy, Utah. Meltzer has won more 100-mile ultramarathons than any other ultramarathoner, and has held speed records at major U.S. trails, including the Appalachian Trail and the Pony Express Trail. Meltzer's trail runs have been featured in news outlets from Ultrarunning.com to NBC Sports. Meltzer has been a professional ultramarathoner since 1999, and a coach since 2007.
Dave (David) Mackey, born November 22, 1969, is a professional American ultra runner and adventure racer who lives in Boulder, Colorado. Mackey has set course records at many significant national ultra-distance trail running races, and spent several years adventure racing nationally and internationally.
Ellie Greenwood is a British ultramarathon runner. She began her ultra career in 2008 and is a two-time 100km World Champion, winning the title in 2010 and 2014. She holds numerous course records, including those for the Canadian Death Race, the JFK 50 Mile Run and the Knee Knackering North Shore Trail Run. She is the first British woman to win the 90 km Comrades Marathon in South Africa. She held the course record for Western States 100 from 2011 through 2022.
Jacquelyn Camille Herron is an American ultramarathon runner, scientist, coach, and a four-time International Ultrarunner of the Year.
Lake Sonoma 50 is a 50-mile ultra marathon race held near Healdsburg, California. The course circumnavigates the Warm Springs arm of Lake Sonoma on hiking trails. It takes place annually on the second Saturday in April. The race was first run in 2008. In recent years it has become one of the most highly competitive ultra marathons in the United States.
Sage Clifton Read Canaday is an American long-distance runner and ultramarathoner.
Gerald Tabios is a Filipino long-distance runner and Ultramarathon runner. Among his most notable races in the United States is the Badwater Ultramarathon. This is an annual race that stretches 135 miles through Death Valley, California in July and ends after a steep climb of Mount Whitney. In the world of Ultramarathons this race, where temperatures often reach 130 °F, is frequently coined "The Toughest Foot Race in the World." Tabios is a 7-time Badwater 135 finisher.
Carol Morgan is an Irish ultrarunner, who specialises in non-stop mountain ultramarathons 100 km and longer, often in challenging conditions with significant ascents / descents. Born in Dublin in 1973, where she trained as a nurse, she is an advanced practitioner in emergency medicine. Morgan holds the course record for endurance ultra event, the Kerry Way Ultra.
Courtney Dauwalter is an American ultramarathon runner and former teacher. In 2023, Dauwalter became the first athlete ever to win Western States 100, Hardrock 100 and the UTMB, three iconic 100-mile races, in the same year.
Tarawera Ultramarathon is a trail running event which includes a 21km, 50km, 102km and a 100-mile ultramarathon trail race, with the inaugural even held in 2009, it is part of the Ultra-Trail World Tour. It is held annually in February and takes place in Rotorua, New Zealand. Awards are given to top men and women finishers in each category.
Gary Cantrell, known as Lazarus Lake, is an endurance race designer and director. His races include the Barkley Marathons, Big's Backyard Ultra, the Barkley Fall Classic, Vol State 500K, A Race for the Ages, the Last Annual Heart of the South, and the Strolling Jim 40. In 2018, Lake covered the United States on foot, starting in Rhode Island and ending in Oregon.
Kami Semick is an American ultramarathon runner based in Bend, Oregon who was a two-time UltraRunner of the Year and USATF’s Ultra Runner of the Year in 2009 and 2010. She ran collegiately with the University of Alabama and transitioned to ultramarathons in her 30s and came in second with a time of 4:54 in the Siskyou Out Back 50k, second in 4:54. Her ultra career went on to include five wins at the Miwok 100K Trail Race, a fourth place finish at the 2006 Western States 100, first female and third overall at the 2010 Vermont 100. Internationally, she won the 2009 IAU 100K World Cup in Belgium, the IAU 50K World Championship in Gibraltar and was involved with the creation of the North Face Tea Horse Trail Running Expedition.
John Wade Kelly is an American endurance athlete who specializes in ultrarunning.
Adam Peterman is an American professional ultra-distance and marathon runner.
Javelina Jundred is a 100 mile (160 km) ultramarathon held at McDowell Mountain Regional Park in Fountain Hills, Arizona. Founded in 2002, it is one of the most popular ultramarathons in the United States, with over 800 participants as of 2023. The course also hosts shorter distances including a 100 kilometres (62 mi) and a 31 kilometres (19 mi) race.
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