Long step or pace (6)
I believe the answer is:
stride
I believe this clue is a double definition.
'long step' is the first definition.
(I've seen this before)
'pace' is the second definition.
(synonyms)
(Other definitions for stride that I've seen before include "Take long steps" , "Move with long steps" , "Walk along in direst way" , "Long decisive step" , "Walk with long steps" .)