A Race Against a Clock, Especially in Cycling
Puzzle 14 of Sherlock Holmes Hard Pack
Question is: A Race Against a Clock, Especially in Cycling
and the answer is: TIMETRIAL
Word Meaning:
TIME TRIAL — (cycling, motor racing) An unpaced race in which riders or teams leaving at regular intervals are timed over a preset course or distance, the winner being the rider or team to finish in the fastest time.
Definitions from Wiktionary.