Cycling from Lands' End to John o'Groats on road is a challenge, but riding it off-road, even more so! The longest off-road route in the UK's a tough ride, but perfectly doable given sufficient training/planning.
The off-road End to End ride is 1201 miles long, and takes an average of 23 to 25 days to complete, approximately 50 miles per day. Some cyclists use a hard tail mountain bike for the job with a rack/panniers attached, whilst others prefer full suspension with a trailer such as a 'Bob Yak'.
Ralph Hughes mountain biked the length of Britain: 1,267 miles through England, Wales and Scotland – with his camping gear on his back.