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On 3 September 2020, Marcia Roberts became the first female to record the journey starting at Lands End, by bike, in a time of 11 days, 13 hours & 13 minutes and set a Guinness World Record. [72] On 16 July 2023, Louise Harris successfully completed the return journey in 10 days 5 hours, breaking the original record by over 1 day 8 hours.
According to a study a human at 70 kg (150 lb) requires about 60 watts to walk at 5 km/h (3.1 mph) on firm and flat ground, [6] while according to a calculator at kreuzotter.de the same person and power output on an ordinary bicycle will travel at 15 km/h (9.3 mph), [7] so in these conditions the energy expenditure of cycling is about one-third ...
The time for the race was not only a record, it was the fastest 1 + 1 ⁄ 2 miles on dirt in history, 2:24 flat, breaking by more than two seconds the track and stakes record of 2:26 3 ⁄ 5 set 16 years earlier by Gallant Man. [77] Secretariat's record still stands as an American record on the dirt. [81]
Dan Patch broke world speed records at least 14 times in the early 1900s. In 1905, he set a world's record for the fastest mile by a harness horse (1:55 1 ⁄ 4 – 1 minute, 55 + 1 ⁄ 4 seconds) that stood unmatched for over 30 years. Unofficially, Dan Patch broke this record in 1906 with a clocking of 1:55.
In 1967, his engine was bored out to 953cc and he set an under 1000cc class record of 184.087 mph (2 way average). To qualify he made a one-way run of 184 mph then later on he re qualified at 190.070 mph (305.88 km/h). His highest recorded measured mile was 188 mph (302.557 km/h).
The distance used for calculating the overall speed record is usually the distance in a straight line. [2] In the case of man-powered races, overall speed record doesn't always reflect the best performance. It is highly dependent on technological advantages generating the speed of the craft, vessel or vehicle. [3]
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While Obree did not break the HPV land speed record, he did set a new record for a rider in the prone position. [31] The previous day, Obree had set a speed of 52.9 miles per hour (85.1 km/h), which was a record speed in the prone position on a two-wheeled HPV (the overall prone record being held by a trike). [32] [33]