Which two places mark the longest distance on the UK mainland?
John O'Groats and Land's End.
John O'Groats sits at the far north-eastern tip of Scotland, and Land's End sits at the far south-western tip of England. Together they mark the two extreme ends of the British mainland. Charity walkers, cyclists, and runners often travel between the two, making the route a famous fundraising challenge.
Why it matters: This pairing is tested as a set, so remember them together rather than trying to recall either place on its own.
Memory hook: John O'Groats to Land's End: top of Scotland to the tail of England, corner to corner.
Official handbook: Chapter 4, section 4.8, page 68