overland

Short definition from Wiktionary

Adjective

1. 1
   By or across land.

Adverb

1. 1
   Over, across, or by land.

Noun

1. 1
   A trip by land between the UK and the Indian subcontinent or Australia, or between the UK and South Africa.

Verb

1. 1
   To transport (especially sheep or other farm animals) over land.
2. 2
   To travel across land.
3. 3
   To go on a recreational expedition to a remote destination, often with the aid of an off-road vehicle.