An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of 42.195 kilometres. Various distances, surfaces, and formats are raced competitively, from the shortest common ultramarathon of 31 miles (50 km) and up to 3100 miles. World Championships are held by the International Association of Ultrarunners (IAU) for 50 km, 100 km, 24 hours, and ultra Trail running. The Global Organization of Multi-Day Ultramarathoners (GOMU) holds World Championships for 48 hours and 6 days. World Records are ratified and recognized by World Athletics, the IAU, and by GOMU.
The Ultra-Trail du Mont-Blanc (UTMB) is a mountain ultramarathon race, first held in 2003, that follows the route of the Tour du Mont Blanc. It has been regarded as the most competitive trail ultramarathon in the world.
Angela Mudge is a Scottish champion hill runner and skyrunner. Despite being born with birth defects in both legs, and finding track athletics not to her liking, she discovered her sport while a postgraduate student in Scotland in the mid-1990s, and developed rapidly.
Kílian Jornet is a Spanish professional long-distance trail runner and ski mountaineer. Widely regarded as one of the greatest trail runners of all time, he has won some of the most prestigious ultramarathons, including the Ultra-Trail du Mont-Blanc, Grand Raid, Western States and Hardrock.
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.
Emelie Tina Forsberg is a Swedish athlete specializing in trail running and ski mountaineering. She has won repeated victories in different disciplines, including European and World Championships.
Rory Bosio is an American ultramarathon runner. She is specializes in mountain running, and won the 2013 and 2014 Ultra-Trail du Mont-Blanc.
Anna Heather Frost is a New Zealand trail and ultra runner.
Skyline Scotland is a set of annual skyrunning races which take place on consecutive days in the mountains around Kinlochleven in Lochaber. The main races are the Mamores VK, the Ring of Steall Skyrace, the Ben Nevis Ultra and the Glen Coe Skyline.
Bruno Brunod is an Italian athlete, a bicyclist who began running late, when he was in his thirties. He is twice world champion of the Skyrunner World Series and holds numerous speed records for climbing and descending some of the highest mountains in the world, like the Matterhorn in 1995, broken only in 2013 by a professional 25 years younger than him, Kílian Jornet Burgada. As of 2016 his speed records for the Monte Rosa in 1997 and the Aconcagua in Argentina in 2000 remained unbroken. Brunod produces results like a professional athlete, but has retained the spirit and humility of an amateur, for which he is widely admired especially amongst fellow mountain runners.
In skyrunning, a vertical kilometer is an uphill mountain running race with an elevation gain of 1,000 metres. The Vertical Kilometer World Circuit also defines it as covering less than 5 km. Trekking poles, which are allowed as optional accessories, are often used in vertical kilometer races.
François D'Haene is a French elite athlete who specializes in ultra running and mountain running.
The 2008 Skyrunner World Series was the 7th edition of the global skyrunning competition, Skyrunner World Series, organised by the International Skyrunning Federation from 2002.
Jonathan Albon is a British sky runner and obstacle course racer who has won three Skyrunner World Series.
The SkyRace Comapedrosa is an international skyrunning competition held for the first time in 2014. It runs every year in Arinsal, La Massana (Andorra) in July and is a SkyRace part of the Skyrunner World Series.
Ultra Pirineu is an international skyrunning competition held for the first time in 2009 under the name Cavalls del Vent. It has been known as Ultra Pirineu since the 2014 edition. It takes place in Bagà, Spain, in September each year. The race has formed part of the Skyrunner World Series.
Bhim Gurung is a Nepalese male sky runner, who won four races of the Skyrunning World Series international circuit, also setting the record in 2016 Kima Trophy.
The Monte Rosa SkyMarathon is an international skyrunning competition held in Alagna Valsesia on Monte Rosa (Italy) which marked the origins of skyrunning.
Tom Evans is a British long-distance runner and a former British Army Captain. In 2020, he competed in the men's race at the 2020 World Athletics Half Marathon Championships held in Gdynia, Poland. He finished third in his Ultra-Trail du Mont-Blanc (UTMB) 2022, and won the 2023 Western States Endurance Run.
The Golden Trail Series is a series of international trail races.
Little Cottonwood Canyon 
