Obviously you can take as long as you like, but you have to complete it in one go to qualify as being an end to ender. This list gives you some idea as to how little time you could do it:
47 minutes. Flown in a McDonnell Douglas F-4K Phantom
1 day, 21 hours. The current record for a push-bike
10 days. The current running record, set by Don Ritchie and Richard Brown
12 days, 3 hours. The current male walking record, set by Malcolm Barnish of the 19th Regiment
13 days, 17 hours. The current female walking record, set by Ann Sayer
26 days, 7 hours. Time taken by one person to walk it backwards
49 days. Time taken for David Sullivan to walk, hitting golf balls all the way
71 days. My current record… never to be beaten by me!
Starting at Lands End (LEJOG)
✅ Generally mild climate
Easy to reach by public transport
Gentle terrain in first few weeks, depending on route
Plenty of amenities e.g. accommodation, shops, refreshment stops
Allows earlier start in the year
Sun will be on your back and not in your eyes
Walking through Cornwall and Devon seems to take forever!
Starting at John O’Groats (JOGLE)
✅ Gets the mountains out the way early
Quickly improves your fitness and stamina
Less traffic and tourist overcrowding
Psychologically “downhill” to southern England
Potential of cold and wet weather
Sun will often be in your eyes and not on your back!