Answer: enduro

AnswerCrossword Clue
ENDURO

Motorcycle race

ENDURO

Rugged road race

ENDURO

Auto race named for the stamina it requires

ENDURO
Off-road motorcycling event
ENDURO
Off-road motorcycle race
ENDUROSports-car rally
ENDUROLong-distance auto race
ENDUROOff-road motorcycle competition
ENDUROMultiday race
ENDUROLong auto race
ENDUROLengthy auto race