You can run after driving in this sporting event (4)
I believe the answer is:
test
'event' is the definition.
(I know that test is a class)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for test that I've seen before include "Analyse" , "water flowing through Hampshire" , "Short exam" , "Check" , "Trial - big match" .)