noun (used with a singular verb) Track.
a race in which runners leap over hurdles 42 inches (107 cm) high.
Exploring A Runner’s High And Other MythsA runner's high seems pretty spectacular. All of your aches, pains, and emotional baggage just vanish after a kick-ass workout.
Compare low hurdles.
Origin of high hurdles
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for high hurdles
(functioning as singular) a race in which competitors leap over hurdles 42 inches (107 cm) high
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012