Mike wears heels for endurance race (2,4)
I believe the answer is:
le mans
'race' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for le mans that I've seen before include "French motor-race venue" , "French racetrack" , "Host of a 24-hour race" , "Place" , "French city renowned for sports car race" .)