- Mark Williamson
- 4:06:37 hour(s):minute(s):second(s)
- United Kingdom (Hull)
The fastest marathon dressed as a telephone box is 4 hrs 6 min and 37 sec and was achieved by Mark Williamson (UK) in Hull, United Kingdom, on 24 September 2017.
Mark attempted this record in a cream telephone box as Hull is the home of these unique boxes.