In the #TubeChallenge you must visit all stations of the #LondonUnderground network as quickly as possible. You are allowed to change stations by foot or other means of public transport. The current record is held by a group of eight teenage friends who visited the 272 stations in 18h 8m 13s.
https://art.tfl.gov.uk/labyrinth/tube-challenge/
https://www.guinnessworldrecords.com/news/2024/7/teenagers-smash-london-tube-challenge-record-with-nearly-two-hours-to-spare