If you have a time to add to this list, you can PM me or use the contacts via Explorer Ticket and I will add it onto this thread. Only completions will be considered for the purposes of this Top Times.
Entries marked "GWR" have been recognised and verified by Guinness World Records.
1. 17:24:44 David Edgington, Gabriel Ferris, Milo Lennon (25/07/25) [UNOFFICIAL FASTEST TIME - NOT SUBMITTED TO GWR]
2. 17:46:07 Alan White (29/03/2025) [Time not submitted to GWR]
3. 17:46:48 Robin Otter and Thomas Sheat (10/08/2024) [CURRENT CONFIRMED GWR]
4. 17:51:55 Derry Lin (14/11/2023)
5. 18:08:13 Arthur Philipps, Ruairí O'Grady, John Mawdsley, Alex Rennie, Tim Livant, Joseph Solomon, Alex Sinclair, Yipeng Xu (23/10/2023) [Former GWR]
6. 18:13:28 Shaun Fareman (23/09/2025)
7. 18:23:19 Laurence Gill and Adam Hughes (28/04/2023)
8. 18:23:48 Andrew Chilcraft (22/09/2022)
9. 18:23:53 Alan White (06/09/2023)
10. 18:24:19 Rhys Jackson (26/07/2025)
11. 18:30:32 Richard Standing (16/06/2023)
12. 18:31:37 Martin Hazel (26/07/2024)
13. 18:41:42 Jake McDuff and Leonard House (08/08/25)
14. 18:47:52 Alan White (14/08/24)
15. 18:55:14 Alan White (19/04/2023)
16. 19:05:xx Dave and Edward (31/10/25) - time not recorded to the nearest second. ** see below
17. 18:59:32 Derry Lin (16/06/2023)
18. 19:22:42 Alan White (22/03/2023)
19. 19:27:47 Jonathan Maddox (05/09/2023)
20. 19:49:15 Andras Bard and Sabrina Jewson (08/07/2023)
21. 19:54:26 Nick468 (01/09/2022)
22. 20:04:10 Adham Fisher (04/10/2021) [Former GWR]
23. 27:42:33 Rhys Jackson (07/11/25 - 08/11/25)
** Dave and Edward (weren't they a singing duo from Ireland?) ticked off Kensington Olympia using the Mildmay Line, and NOT the District Line - the massive cheats!
List updated: 06/10/2025 (A new unofficial time, beating the previous best by around 22 minutes!)
List updated: 07/10/2025 (A new time of 18:13:28 by Shaun Fareman, moving into 6th place in the list)
List updated: 07/10/2025 (A new time of 18:41:42 by Jake McDuff and Leonard House, moving into 12th place in the list)
List updated: 27/11/2025 (A new time of 19:05:xx by Dave and Edward, aged 14. Their time was not recorded to the nearest second)
List updated: 27/11/2025 (A "new" time of 18:24:19 by Rhys Jackson, set back in July but not on this list for some reason)
List updated: 29/11/2025 (Another time by Rhys Jackson, set over two days in November 2025)