A triathlon is an endurance multisport race consisting of swimming, cycling, and running over various distances. Triathletes compete for fastest overall completion time, racing each segment sequentially with the time transitioning between the disciplines included. The word is of Greek origin, from τρεῖς, 'three', and ἆθλος, 'competition'.
Long-distance running, or endurance running, is a form of continuous running over distances of at least 3 km (1.9 mi). Physiologically, it is largely aerobic in nature and requires stamina as well as mental strength.
Road running is the sport of running on a measured course over an established road. This differs from track and field on a regular track and cross country running over natural terrain.
An ultramarathon is a footrace longer than the traditional marathon distance of 42.195 kilometres. The sport of running ultramarathons is called ultra running or ultra distance running.
Fell running, also sometimes known as hill running, is the sport of running and racing, off-road, over upland country where the gradient climbed is a significant component of the difficulty. The name arises from the origins of the English sport on the fells of northern Britain, especially those in the Lake District. It has elements of trail running, cross country and mountain running, but is also distinct from those disciplines.
Dean Karnazes, is an American ultramarathon runner, and author of Ultramarathon Man: Confessions of an All-Night Runner, which details ultra endurance running for the general public.
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.
Anton Krupicka is an American ultra-runner. He has won the Leadville 100 twice, the Miwok 100K, the Rocky Raccoon 100 Miler, the Collegiate Peaks 50 Miler, the White River 50 Miler twice, the High Mountain 50k and the Estes Park Marathon.
Ryan "Hedgie" Nicholas Sandes is a South African trail runner. In 2010 he became the first competitor to have won all four of the 4 Deserts races.
Amber Ferreira is an American triathlete, coach and endurance athlete. She is the 2010 and 2014 United States Snowshoe Champion and the 2012 World Snowshoe Championship runner-up.
Hoka One One is a sportswear company that designs and markets running shoes. It was founded in 2009 in Annecy, France, and had been based in Richmond, California before it was acquired by Deckers Brands in 2013. Hoka first gained attention in the running industry by producing shoes with oversized midsoles, dubbed "maximalist" shoes, in contrast to the minimalist shoe trend that was gaining popularity at the time.
Jacquelyn Camille Herron is an American ultramarathon runner and scientist. She has 12 world records in ultramarathon distances.
The definition of ultra-distance cycling is far more vague than in ultra running or in ultra-triathlon. Any bike race or ride longer than a century ride, which is 100 miles (160 km), is sometimes considered to be ultra-distance cycling. However, such events are relatively common, so using a longer distance to define the category is more useful, such as any race or ride that is longer than 200 kilometres (120 mi), 300 kilometres (190 mi) or even a double century, 200 miles (320 km).
Elisabet Barnes is a Swedish athlete specialized in ultrarunning. Her major claim to fame is winning the Marathon des Sables in 2015, winning each stage of the race. She repeated her win in 2017. The Marathon des Sables has been listed by Outside Magazine as one of the 9 toughest ultramarathons in the world. In 2015, she participated in six races, winning all and setting new course records in four.
Jasmin Karina Paris is a British runner who has been a national fell running champion and who has set records for the Bob Graham Round and the Ramsay Round. In 2024, she became the first woman to successfully complete the Barkley Marathons.
The backyard ultra or last one standing is a form of ultramarathon race where competitors must consecutively run the distance of 6.706 kilometres (4.167 mi) in less than one hour, which is a pace of 100 miles per 24 hours. The race is over when only one runner remains to complete a lap. This runner is marked as the winner and only finisher, with all other runners receiving a "DNF". The runner who completes the second-most laps in a race is often referred to as the "assist", in the sense that their effort is ultimately what determines how long the race is allowed to continue--there is no predefined end length or time in a backyard ultra, as long as multiple runners can complete each loop within an hour.
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.
John Wade Kelly is an American endurance athlete who specializes in ultrarunning.
Adam Peterman is an American professional ultra-distance and marathon runner sponsored by Hoka.
Bighorn Trail Run is an ultramarathon trail running event held annually in the Bighorn National Forest of Wyoming. Founded in 1993, it has several distances including 100 miles (160 km), 52 miles (84 km), 32 miles (51 km), and 18 miles (29 km).
