Hurdles

400mH

Description

Competitors run once around a 400m track and clear ten evenly-spaced hurdles in the process. They start from blocks placed in staggered positions and run in lanes.
A reaction time – measured by sensors in the starting pistol and on the blocks – of less than 0.1 is deemed a false start and all the runners are recalled. After one false start anyone responsible for a subsequent false start is disqualified immediately. A runner can also be disqualified if he or she steps out of their designated lane.

Men jump hurdles that are 36in (91.4cm) high; women negotiate 30in (76.2cm) barriers. The hurdles are knocked down easily if touched, which allows the athlete to continue even if he or she collides with them.

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Sasha Gollish @sgollishruns @athleticscanada at #IaafKampala2017 @iaafkampala2017 Presser 25 Mar 2017
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Amazing race by @raecliff this morning in New York! 1:12:07 for 8th place! #UnitedNYCHalf #NewYork #NYRR #run #halfmarathon #running
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When the last thing you want to do is go for a run, but then this happens...
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