An up-and-down road or track (10)
I believe the answer is:
switchback
I believe this clue is a double definition.
'an up-and-down road' is the first definition.
(I've seen this before)
'track' is the second definition.
(thesaurus)
(Other definitions for switchback that I've seen before include "big dipper" , "Route with alternating sharp ascents and descents - rollercoaster" , "roller coaster" , "uneven way" , "ups and downs" .)