TREKKING is a playable word

trek Scrabble® Dictionary

verb
trekked, trekking, treks
to make a slow or arduous journey
91 Playable Words can be made from "TREKKING"
   2-Letter Words (11 found)
   3-Letter Words (28 found)
   6-Letter Words (3 found)
   8-Letter Words (1 found)