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Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.
The 2024 UCI Mountain Bike Marathon World Championships took place on 22 September 2024 in Snowshoe, United States. [ 1 ] [ 2 ] It was the 22nd edition of the UCI Mountain Bike Marathon World Championships .
The 2014 UCI rules limit events to distances between 60 km (37 mi) and 160 km (99 mi). Almost all of the participants are elite professional mountain bike racers. There is an annual world championship event, the UCI Mountain Bike Marathon World Championships. The races can be run over as a single or multi-lap course, however, the course cannot ...
YouTube currently hosts more than 1,000 videos of alleycat races, most of which have been uploaded since 2006. On May 19, 2018 the first Citi Bike Race , was held in New York City. The event was an alleycat style race where all participant rode bicycles from the city's bike sharing program, Citi Bike .
The Badwater Ultramarathon is a 135-mile (217 km) ultramarathon race starting at −282 feet (−86 m) [1] below sea level in the Badwater Basin, in California's Death Valley, and ending at an elevation of 8,360 feet (2,550 m) at Whitney Portal, the trailhead to Mount Whitney. It takes place annually in mid-July when the weather is the most ...
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.
An ultramarathon is a footrace longer than the traditional marathon distance of 42.195 kilometres (26 mi 385 yd). The sport of running ultramarathons is called ultra running or ultra distance running. Various distances, surfaces, and formats are raced competitively, from the shortest common ultramarathon of 31 miles (50 km) and up to 3100 miles ...
An ultra-triathlon covers more distance than an ITU 'long course,' or Ironman™ triathlon.The term generally refers to all triathlon events with a distance that is a multiple of the Ironman Triathlon, which consists of 2.4 miles (3.86 km) of swimming, 112 miles (180.25 km) of cycling, and a full marathon (26.2 mi or 42.2 km) of running. [1]