- Who
- Sven Altermatt, Salomé Hegi-Altermatt
- What
- 5:38.83 minute(s):second(s)
- Where
- Switzerland (Basel)
- When
The fastest mile three legged is 5 min 38.83 sec, achieved by Sven Altermatt and Salomé Hegi-Altermatt (both Switzerland) in Basel, Switzerland, on 10 February 2024.
The pair have always dreamed of achieving a record together, and have been GWR fans since reading the books as children.