All getting excited in some short race (6)
I believe the answer is:
slalom
'race' is the definition.
('slalom' means to move in a zigzag)
'all getting excited in some short' is the wordplay.
'getting excited' indicates an anagram.
'in' is an insertion indicator.
'short' means to remove the last letter.
'all' is an anagram of 'lal'.
'some' with its last letter taken off is 'som'.
'lal' going within 'som' is 'SLALOM'.
(Other definitions for slalom that I've seen before include "Winding ski-run" , "Downhill skiing race" , "Skiing obstacle race" , "Windy skiing event" , "Skiers' obstacle race" .)