|Origin:||Middle Dutch trecken 'to pull, haul, move to new land'|
trek2 past tense and past participle trekked, present participle trekking [intransitive always + adverb/preposition]
to make a long and difficult journey, especially on foot [= hike]
trek up/down etc
The elevator was broken, so we had to trek up six flights of stairs.
to walk a long way, especially in the mountains, as an adventure [= hike]
trek in/across etc
For five days he trekked across the mountains of central China.