At 4,500 kilometers , Juba 's the Continental Divide Trail is the longest and highest mountain trail in the world . the Continental Divide Trail takes considerable planning and roughly eight months to complete . 10 people attempt to thru-hike Great Himalayan Trail each year .
At 4,500 kilometers , Nepal 's Great Himalayan Trail is the longest and highest mountain trail in the world . The Grand Italian Trail takes considerable planning and roughly eight months to complete . Only 150 people attempt to thru-hike the Continental Divide Trail each year .