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10,000 m walk (track) 41:23.14 Tyler Sorenson: 9 July 2011 World Youth Championships: Lille, France 17 years, 141 days 10 km walk (road) 44:27 Trevor Barron: 29 March 2009 Pharr US Team Trials Race Walk Cup Pharr, United States 16 years, 180 days [22] 4 × 100 m relay: 39.95 Elite Speed Youth Track Club A Alex Sands Cameron Douglas Terry Conwell
This means that distance spikes generally have a softer, more durable sole, particularly through the heel region. Although still "glove-like," the fit for distance spikes is generally slightly looser than for sprint spikes, given the longer race duration. Middle distance spikes are a hybrid of a sprint shoe and a distance shoe, featuring an ...
All of these factors make track and "football 40" performances essentially impossible to compare. The world best time for a "football 40" is 4.17 by Deion Sanders, while the extrapolated best for an Olympic-level athlete (including reacting to a starting gun) is 4.24 by Maurice Greene at the 2001 World Championships in Athletics.
The senior group races on a 300-yard swim, an 8-mile bike ride and a 2-mile run. The age groups start in heats, with each boys' age groups starting before the girls' age group. The first age group to start are the 14-year-old boys, followed by the 14-year-old girls, and this continues down the age groups to the 6-year old girls, the final group ...
Compression (Christmas tree) spikes and 6mm (1/4in) pyramid spikes are promoted for use on Mondotracks. These spikes will not damage the track. Needle spikes however, will damage the track. The thin-sharp pointed needle spikes allow the spike to penetrate the surface which can rupture and degrade the track over time. [10]
They often have more cushioning and heel support because of the stress of downhill running. In addition, they can have longer spikes (anywhere from 1/4 in. to 5/8 in.) for better traction, as they are used on natural terrain that are affected by weather and can include hills.
Currently, the world's best for this event is 30.69 seconds, set by Letsile Tebogo at altitude in Pretoria, South Africa in 2024. [17] The women's record is 34.41 seconds, set by Shaunae Miller-Uibo in Ostrava, Czech Republic in 2019. [18] Junior girls in several countries run this distance instead of the 400 metres.
A balance bike (or run bike) is a bicycle without pedals that learners propel by pushing their feet against the ground. [1] By allowing children to focus on developing their sense of balance and coordination before introducing pedalling, balance bikes enable independent riding more quickly than training wheels .
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