The 1.5 miles (2.4 km) Kona Underpants Run in Kona, Hawaii asks all the runners to strip down to one's skivvies and race. Held a few days before the Hawaii Ironman World Championship, the event was designed to allow athletes to blow off some steam before the big competition but now it's become its own destination. The race starts and finishes behind the Courtyard King...

All within Lake Mead National Recreation Area, the run will start at Boulder Beach and lead you onto the paved Mountain Loop Trail. Offering a Marathon, Half Marathon, 10K and 5K, this run will take you on an epic journey up a mountainous trail.

La Ruta de los Conquistadores, known as the first mountain bike race of its kind, is a multi-stage race held in Costa Rica. La Ruta de los Conquistadores consists of crossing Costa Rica from the Pacific to the Atlantic Coast in the course of three days. It an individual race, covering approximately 400 kilometers (250 miles) of terrain. First staged in 1992, the three...

The London Marathon is a long-distance running event held in London, United Kingdom and part of the World Marathon Majors. In 2012 it was the world's largest marathon with 36,748 finishing the race. The event was first run on 29 March 1981 and has been held in the spring of every year since. Since 2010, the race has been sponsored by Virgin Money, and is known as the ...

A Marathon is a running road race of exactly 42.195 kilometres (26.2 miles), a distance which commemorates the legendary run of the Greek soldier, Pheidippides, who carried the victory message from the Battle of Marathon to his commanders in Athens in 490 BC. The Marathon is regularly run in the Olympic Games, one of the original contests of the modern Olympiad. There...

The Marathon des Sables (MdS, Marathon of the Sands, or Sahara Marathon) is a six-day, 251 km (156 mi) ultramarathon, which is the equivalent of six regular marathons. The longest single stage (2009) is 91 km (57 mi) long. This multiday race is held every year in southern Morocco, in the Sahara desert. It is considered the toughest foot race on Earth. The first e...

Run a Marathon under 4 hours.

The Midmar Mile is a swimming race held annually in February at the Midmar Dam north of Pietermaritzburg, South Africa. Each year, it draws thousands of competitors, from serious international athletes and Olympic medallists to purely recreational swimmers. In 2009 the event, in which 13,755 compentitors finished the race, was recognised by the Guinness Book of World ...

The weekend closest to the summer solistice (21 June) each year features the Midnight Sun Fun Run, a 5K, 10K and Half-Marathon that starts at midnight under the blazing 24-hours of sunlight experienced for 50+ days each summer in Inuvik. Runners from around the world make their way North to participate in this unique event under the midnight sun.

The Mount Marathon Race is a mountain race that is run every Fourth of July in Seward, Alaska. The race begins downtown, at Fourth and Adams, in front of the First National Bank Alaska, and ends a block south of where it began, at Fourth and Washington. The halfway point is a stone marker atop Mount Marathon, 2974 feet (906 m) above sea level, and a mile and a half fr...

The Mount Washington Road Race is a 7.6-mile (12.2 km) road running event that follows the auto road going from the base of Mount Washington in New Hampshire nearly to the mountain's summit (located at 6,288 feet (1,917 m) above sea level). The race was first held in 1936, and has been run annually since 1966. Women first participated officially in 1972. The race cour...

They call it “playing dirty” but a Mud Run 10K is a serious challenge with a fun twist. Fashioned after training regimens of the United States Marine Corps, Mud Runs are regularly held across the USA and Canada and starting to appear in Australia, Europe and other world-wide locations. Every course is different; the only common denominator is the length, 1...

Once a year, a 500 lucky participants get to tackle the world's longest staircase climb, the Niesen Treppenlauf. In 1910, a funicular railway was completed from the village of Mülenen up to the peak of Mount Niesen. Going alongside the funicular are two-mile staircase with a slope that gets up to a glute-grinding 65% gradient. There are a world record 11,674 step...

The Olympic Distance Triathlon, sometimes referred to as an International Distance Triathlon is a 1.5 kilometer swim followed by a 40 kilometer bike ride and then a 10 kilometer run. These intermediate races attract elite athletes, triathletes training for Ironman distance events and fitness buffs looking for alternative exercise options. Olympic Distance Triathlons a...

ÖTILLÖ (Swedish for "Island to island") is a one-day swimrun race in the archipelago of Stockholm, Sweden. You compete in teams of two. The aim of the race is to get from Sandhamn to Utö, via 24 islands, by running across them and swimming between them. The total distance is 75 kilometres of which 10 km are open-water swimming and 65 km are trail-r...