College group some distance beneath climber (3,6)
I believe the answer is:
ivy league
'college group' is the definition.
(prestigious group of US colleges)
'some distance beneath climber' is the wordplay.
'some distance' becomes 'league'.
'beneath' says to put letters next to each other (in a down clue).
'climber' becomes 'ivy' (I've seen this before).
'league' put after 'ivy' is 'IVY LEAGUE'.
(Other definitions for ivy league that I've seen before include "Group of eight leading US universities" , "Brown, Columbia, Cornell, Dartmouth, Harvard, Pennsylvania, Princeton and Yale" , "Prestigious group of US universities" , "Harvard, Yale etc" , "Group of US colleges with prestigious reputations" .)