Answer: trekker

AnswerCrossword Clue
TREKKERShatner-Nimoy show fan
TREKKER"Enterprise" fan
TREKKERCertain sci-fi fan
TREKKERSouth African traveler.
TREKKEROne on a long walk
TREKKEROne who may reach peaks
TREKKERHe goes on foot
trekkerone who treks (to make a slow, arduous journey)