n.

a journey by ox wagon (especially an organized migration by a group of settlers)

any long and difficult trip

Trekking in the Alps Without Freezing or Getting Tired
Trekking in the Alps without freezing or getting tired
Buffer for trekking or nordic-walking poles
Trekking Through History:The Huaorani of Amazonian Ecuador
Trekking through History: The Huaorani of Amazonian Ecuador
Trekking across the Brain: The Journey of Neuronal Migration
Primitive and remote: Hill tribe trekking in Thailand
Play in adventure tourism - the case of Arctic trekking.
The Effects of High Altitude Trekking on Body Composition and Resting Metabolic Rate
Awareness, Prevalence, Medication Use, and Risk Factors of Acute Mountain Sickness in Tourists Trekking around the Annapurnas in Ne...