Free to release no party at a distance (7)
I believe the answer is:
unchain
'free' is the definition.
(unchaining is a kind of freeing)
'release no party at a distance' is the wordplay.
I cannot really see how this works, but
'no' could be 'n' (common abbreviation) and 'n' is present in the answer.
'at' could be 'in' (synonymous in some cases - eg at school, in school) and 'in' is present in the answer.
'a' is found in the answer.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for unchain that I've seen before include "Release from fetters" , "Free" , "Release from bondage" , "loose" .)