Prepare for match maybe, running around on rising ground (7)
I believe the answer is:
terrain
'ground' is the definition.
(terrain is land or ground)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for terrain that I've seen before include "A stretch of land for trainer" , "Piece of ground" , "Stretch of land with respect to its character" , "Stretch of land of a particular sort" , "Tract of land with prevailing characteristic" .)