- Who
- Mark Williamson
- What
- 3:05:45 hour(s):minute(s):second(s)
- Where
- United Kingdom (London)
- When
The fastest marathon dressed in a rugby kit (male) is 3 hr 5 min 45 sec, and was achieved by Mark Williamson (UK) at the Virgin Money London Marathon, in London, UK, on 3 October 2021
This record was last broken at the Berlin Marathon in 2019.