Hiker's nothing much to write home about (10)
I believe the answer is:
pedestrian
I believe this clue is a double definition.
'hiker's' is the first definition.
(I've seen this before)
'nothing much to write home about' is the second definition.
(I've seen this before)
(Other definitions for pedestrian that I've seen before include "Hiker" , "Dull, uninspired" , "lacking inspiration" , "he goes for a walk" , "Walker; prosaic" .)