Run into a hitch? (5)
I believe the answer is:
elope
'run into a hitch?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elope that I've seen before include "Run away with one's beloved" , "Run away to get married" , "leave with lover" , "run off with another?" , "Run off with Mr/Ms Right" .)