Saint trips taking long steps (7)
I believe the answer is:
strides
'long steps' is the definition.
(I've seen this before)
'saint trips' is the wordplay.
'saint' becomes 'st' (abbreviation).
'trips' becomes 'rides' (I've seen this before).
'st'+'rides'='STRIDES'
'taking' acts as a link.
(Other definitions for strides that I've seen before include "Walks fast" , "Walks with long steps" , "Bags" , "Takes great steps" , "Long walking steps" .)