- Who
- Marta Kiermacz-Abramek
- What
- 3:57:57 hour(s):minute(s):second(s)
- Where
- United Kingdom (London)
- When
The fastest marathon in a suit (female) is 3 hr 57 min 57 sec and was achieved by Marta Kiermacz-Abramek (UK) at the Virgin Money London Marathon, in London, UK, on 22 April 2018.
This was the eleventh year that Guinness World Records has partnered with the London Marathon.