
An endurance game is a game where the object is to last as long as possible under some sort of stress. The stress might be physical pain, fear, social embarrassment or any other negative sensation.

A 24-hour run is a form of ultramarathon, in which a competitor runs as far as they can in 24 hours. They are typically held on 1- to 2-mile loops or occasionally 400-meter tracks.

The All Alaska Sweepstakes was an annual dog-sled race held in Alaska during April. Mushers traveled from Nome to Candle, traveling along the Bering Strait, and then return to Nome.

An aquathlon is a multisport race consisting of continuous run and swim elements. Competitors complete a swim immediately followed by a run over various distances. Athletes compete for fastest overall course completion, including the time transitioning between the disciplines.

Backward running, also known as backwards running, running backwards, reverse running, retro running, or retro locomotion is the act of running in reverse, so that one travels in the direction one's back is facing rather than one's front. It is classed as a retro movement, the reverse of a normal movement.

The Biel Running Days takes place in June in Biel/Bienne, Switzerland. Various long-distance track events are involved. The most well known of these is the 100 km Ultra marathon which began in 1959 and is one of the biggest and oldest of its kind. You can do the run alone, as a couple or in a Team of 5. The Ultra marathon is also a part of the European Ultramarathon Cup. Along with the 100 km Ultra marathon there are a night marathon and a half marathon taking place.
Bloody knuckles is a game in which each player makes a fist with the thumb wrapped around the other fingers. Then each fist punches the other's fist. Players who flinch are out of the game. Whoever lasts the longest before quitting wins the game. The game is played until someone's knuckles are bleeding or they quit due to excessive pain. Variations include simultaneous or alternate punching, and games in which the strike is the loser's punishment/winner's privilege. In the first two ways of playing the game, violence, though essentially consensual, is inherent, not a risk. Almost all ways of playing are dangerous, carrying the risk of injury, scarring, and damage to one's bones and hand. The point is to make them bleed.The rules of this game are simple: each combatant makes a fist and then the fists punch each other. You flinch, you lose. Whoever lasts the longest before quitting wins.

The Breckenridge 100 is an ultra-endurance mountain bike race held annually in mid July in Breckenridge, Colorado.

Carbohydrate loading, commonly referred to as carb-loading, or carbo-loading, is a strategy used by endurance athletes, such as marathoners and triathletes, to maximize the storage of glycogen in the muscles and liver.
The central governor is a proposed process in the brain that regulates exercise in regard to a neurally calculated safe exertion by the body. In particular, physical activity is controlled so that its intensity cannot threaten the body’s homeostasis by causing anoxic damage to the heart muscle. The central governor limits exercise by reducing the neural recruitment of muscle fibers. This reduced recruitment causes the sensation of fatigue. The existence of a central governor was suggested to explain fatigue after prolonged strenuous exercise in long-distance running and other endurance sports, but its ideas could also apply to other causes of exertion-induced fatigue.

The Cohutta 100 is an ultra-endurance 100 mile (162 km) mountain bike race held annually in late April. The race starts and ends at the Ocoee Whitewater Center in Copperhill, Tennessee. The course is one large loop through the Cohutta Wilderness area with approximately 35% single-track and 60% remote forest service roads, and a total of over 12,000 feet of elevation gain. One of the most challenging parts is the numerous small but very steep climbs.

Cross-country (XC) cycling is a discipline of mountain biking. Cross-country cycling became an Olympic sport in 1996 and is the only form of mountain biking practiced at the Olympics.

The decathlon is a combined event in athletics consisting of ten track and field events. The word "decathlon" was formed, in analogy to the word "pentathlon", from Greek δέκα and ἄθλος. Events are held over two consecutive days and the winners are determined by the combined performance in all. Performance is judged on a points system in each event, not by the position achieved. The decathlon is contested mainly by male athletes, while female athletes typically compete in the heptathlon.

The Dolomitenmann is an extreme sports relay race held in September in the East Tyrolean, or so-called Dolomite Mountains of Austria, near the city of Lienz. The founder and organiser is Werner Grissmann, a former World Cup skier.

The ear pull is a traditional Inuit game or sport which tests the competitors' ability to endure pain, and also strength. In the ear pull, two competitors sit facing each other, their legs straddled and interlocked. A two-foot-long loop of string, similar to a thick, waxed dental floss, is looped behind their ears, connecting right ear to right ear, or left ear to left ear. The competitors then pull upon the opposing ear using their own ear until the cord comes free or the opponent quits from the pain. The game has been omitted from some Arctic sports competitions due to safety concerns and the squeamishness of spectators; the event can cause bleeding and competitors sometimes require stitches.The Inuit ear pull game is a harsh test of physical endurance....[in which] a thin loop of leather is positioned behind the ears of each of two competitors who then pull away from each other until one gives up in pain.

Endurance riding is an equestrian sport based on controlled long-distance races. It is one of the international competitions recognized by the FEI. There are endurance rides worldwide. Endurance rides can be any distance, though they are rarely over 160 km for a one-day competition.

Mensen Ernst was born as Mons Monsen Øyri, in the summer of 1795 in the village of Fresvik along the Sognefjord, in the municipality of Vik in Sogn og Fjordane county, Norway. He was a road runner and ultramarathonist and one of the first sport professionals and employed as a courier. He made his living running, mainly through placing bets on himself being able to run a certain distance within a period of time.

Exercise physiology is the physiology of physical exercise. It is one of the allied health professions that involves the study of the acute responses and chronic adaptations to exercise. Exercise Physiologists are the highest qualified exercise professionals and utilise education, lifestyle intervention and specific forms of exercise to rehabilitate and manage acute and chronic injuries and conditions.

Marcel Nico Andreas Heinig is a German extreme sportsman who has his greatest success in decatriathlons, which are more than fifty times the distance of the Olympic Distance Triathlon. He scored his biggest victory by winning the gold medal at the World Championships in Decatriathlon in 2008.
In endurance sports such as cycling and running, hitting the wall or the bonk is a condition of sudden fatigue and loss of energy which is caused by the depletion of glycogen stores in the liver and muscles. Milder instances can be remedied by brief rest and the ingestion of food or drinks containing carbohydrates. The condition can usually be avoided by ensuring that glycogen levels are high when the exercise begins, maintaining glucose levels during exercise by eating or drinking carbohydrate-rich substances, or by reducing exercise intensity.

The International Association of Ultrarunners (IAU) is the world governing body of ultra running, race events longer than the marathon distance of 42.2 km. It regulates and sanctions the World Championships for various ultramarathon distances, and tracks world records in ultra distance races approved by IAU. IAU operates under the patronage of the World Athletics and follows World Athletics rules.

The Lumberjack 100 is an ultra-endurance mountain bike race held the 3rd Saturday in June at Michigan's Big M Cross Country Ski and Mountain Bike Trail in the Manistee National Forest. The race is a 100-mile mountain bike marathon and is part of the National Ultra Endurance Series. The race course consists of three 33.33 mile laps in the Udell Hills area and crosses the North Country National Scenic Trail twice per lap. The course contains over 8,000 feet of climbing and is 80% single track. Due to venue limitations, only 450 racers are allowed to participate.

Mass start is a format of starting in some racing sports such as long-distance running in sport of athletics, speed skating, long-distance cross-country skiing and biathlon.

The Montezuma's Revenge was a 24-hour ultra-endurance mountain bike wilderness race held in Colorado each August from 1986 until 2006. Competitors were required to climb a 14,272-foot (4,350 m) mountain-Gray’s Peak. The course varied from year to year but was always extremely demanding. The winner was determined by who covers the most distance in the 24-hour period. Current course records:Female Jari Kirkland in 2004 - 122.33 miles (196.87 km) - 25,926 feet (7,902 m) climbed Male Josh Tostado in 2005 - 156 miles (251 km) covered - 32,350 feet (9,860 m) climbed

Painstation is an art object and arcade game based on Pong developed by the artists' group, "/////////fur//// art entertainment interfaces", with pain feedback.

Road bicycle racing is the cycle sport discipline of road cycling, held on paved roads. Road racing is the most popular professional form of bicycle racing, in terms of numbers of competitors, events and spectators. The two most common competition formats are mass start events, where riders start simultaneously and race to set finish point; and time trials, where individual riders or teams race a course alone against the clock. Stage races or "tours" take multiple days, and consist of several mass-start or time-trial stages ridden consecutively.

Running is a method of terrestrial locomotion allowing humans and other animals to move rapidly on foot. Running is a type of gait characterized by an aerial phase in which all feet are above the ground. This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to sprinting.

The Shenandoah 100 is an ultra-endurance 100 mile (162 km) mountain bike race held in central Western Virginia near Stokesville. The race is normally held on the Sunday during Labor Day weekend. The race has been run continuously since 1998.

Shocking Duel is a game of pain endurance in which each player grips one of a pair of connected handles which deliver electric shocks of increasing intensity. The loser is the first player to release their handle.

A Swimrun is a multiple-stage competition which involves participants running and swimming over a race course that involves multiple swim and run stages. Typically participants do not change clothing in transitions as in other multi-sports such as triathlon. All equipment used by participants has to be carried all the way to the finish line.

The Tough Guy Competition is an endurance challenge that claims to be the world's most demanding one-day survival ordeal. First staged in 1987 and organised by Billy Wilson under the pseudonym of "Mr. Mouse", it is held on a 600-acre farm in the English village of Perton, Staffordshire. It has been described as "the toughest race in the world", with up to one-third of the starters failing to finish in a typical year. After 27 stagings of the winter event, Wilson still claimed nobody had ever finished the course according to his extremely demanding rules.

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 or treis (three) and ἆθλος or athlos (competition).

Ultraman is a three-day, 515 km multisport race modelled on the one held annually on the Big Island of Hawaii which is now called the Ultraman World Championship. "Ultraman" is a branding for events affiliated with the Hawaii original. Each race is divided into three stages over three days: The first is a 6.2-mile (10-km) ocean swim from Kailua Bay to Keauhou Bay, followed by a 90-mile (145-km) cross-country bike ride, with vertical climbs that total 6,000 feet. Stage two is a 171.4-mile (276-km) bike ride from Volcanoes National Park to Kohala Village Inn in Hawi, with total vertical climbs of 4,000 feet. Stage three is a 52.4-mile (84-km) double-marathon, which starts at Hawi and finishes on the beach at the Old Kona Airport State Recreation Area. Each stage must be completed within 12 hours or less. The swim portion of stage one must be completed in 5.5 hours or less. Competitors who do not reach the finish lines within the time limits are disqualified, but encouraged to continue racing each day as participants.

An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of 42.195 kilometres.

The Whitney Classic is an 136-mile-long (219 km) endurance mountain bike race that is held in late September or October every year. The ride runs from the Badwater Basin in Death Valley to Whitney Portal. Badwater, at 279 feet (85 m) below sea level, is the lowest place in the North America and Whitney Portal at 8,360 feet (2,550 m) is the trailhead that leads to Mount Whitney, the highest peak in the contiguous United States with an elevation of 14,505 feet (4,421 m).

The Wild West Relay is a 200-mile team running relay race held annually in August following a rural course in northern Colorado and southern Wyoming between Fort Collins and Steamboat Springs, Colorado. First organized the event is now capped at 100 teams. The remote and scenic course begins on the plains north of Fort Collins. From there, the course winds north through Red Feather Lakes to Woods Landing, Wyoming, then south through Routt and Roosevelt National Forests, through Walden, Colorado, over the Continental Divide at Rabbit Ears Pass, and finishes in Steamboat Springs, Colorado.

The Wilderness 101 Mountain Bicycle Race is an ultra-endurance 101 mile (162 km) mountain bike race held annually in late July. The race is commonly called the W101, akin to a first year college course, such as Physics 101, at the nearby Penn State University.

Winter triathlon is a multisport event involving the continuous and sequential completion of snowshoeing or running, mountain biking or speed skating and cross-country skiing, all on snow. Course distances are set on the day of the event to achieve a winning time around 80–90 minutes, after taking account of the snow conditions.

The Yukon Quest, formally the Yukon Quest 1,000-mile International Sled Dog Race is a sled dog race scheduled every February since 1984 between Fairbanks, Alaska, and Whitehorse, Yukon. Because of the harsh winter conditions, difficult trail, and the limited support that competitors are allowed, it is considered the "most difficult sled dog race in the world", or even the "toughest race in the world"—"even tougher, more selective and less attention-seeking than the Iditarod Trail Sled Dog Race." The originator envisioned it as "a race so rugged that only purists would participate."