Run to a small mobile home (7)
I believe the answer is:
scamper
'run' is the definition.
(scampering is a kind of running)
'a small mobile home' is the wordplay.
'a small' becomes 's' (abbreviation - e.g. clothes size).
'mobile home' becomes 'camper' ('camper' can be a synonym of 'mobile home').
's'+'camper'='SCAMPER'
'to' is the link.
(Other definitions for scamper that I've seen before include "Scurry, scuttle" , "Proceed hurriedly" , "Run about briskly" , "Run with quick light steps" , "Beetle" .)