Rainy rite performed on route (9)
I believe the answer is:
itinerary
'route' is the definition.
(I've seen this before)
'rainy rite performed' is the wordplay.
'performed' indicates an anagram.
'rainy'+'rite'='rainyrite'
'rainyrite' with letters rearranged gives 'ITINERARY'.
'on' is the link.
(Other definitions for itinerary that I've seen before include "Travel plan" , "Record of a journey" , "schedule" , "Tiny airer? (anagram)" , "Proposed route of travel" .)