hiking and camping overnight in backcountry with one's gear carried in a backpack.
low-cost, generally urban, travel with minimal luggage and frugal accommodations.
A journey or trip, especially by foot; also (uncountable) journeying, travelling.
Straying from the main subject in speech or writing; digression; (countable) an instance of this.
Broad or systematic discussion of a subject; (countable) an instance of this; a discourse.