My summer holiday in 2013 - cycle camping to the northernmost point of mainland Britain, which I thought had to be done after visiting the other end in 2012. Click here to start.
Height climbed 37,849 ft
Highest point 1,500 ft (Drumochter pass)
Lowest point about sea level (near Glasgow/Gretna/Inverness/John o'Groats)
For everyone who said "you should be going the other way, it's downhill", net height loss was 149 ft.