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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.
Race Across America, an ultra marathon bicycle race across the United States that started in 1982. The fastest average speed records are: Solo man: Christoph Strasser, 2014, who averaged 16.42 mph (26.43 km/h) riding 3,020 miles (4,860 km) in 7 days, 15 hours, and 56 minutes. [76]
The mechanism has a rocker arm [5] [6] on each side of the bike that replaces the round sprockets (which are usually only on the right side) on chain driven bikes. In contrast to traditional derailleur chain drives, the drive does not slip when changing gears, [ 7 ] and the gearing can be changed even when the bicycle is almost stationary.
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 .
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 .
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 ]
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 ...
Leadville Trail Marathon: This is a 26.2-mile (42.2 km) marathon through the mining districts east of Leadville, is held in June each year. The midpoint of the course is at Mosquito Pass, with an altitude of 13,185 feet (4,019 m). In 2006, a "heavy" half marathon event of 15 miles was added, which is run on the same day and also goes to the top ...