- Who
- Masakazu Konno
- What
- 3:23:42 hour(s):minute(s):second(s)
- Where
- Germany (Berlin)
- When
The fastest marathon dressed as a ninja (male) is 3 hr 23 min 42 sec, and was achieved by Masakazu Konno (USA), at the BMW Berlin Marathon, in Berlin, Germany, on 24 September 2023.
Masakazu has previously achieved the fastest marathon wearing a suit and dress shoes, a record he set at the London Marathon.