- Who
- Aleksandr Sorokin
- What
- 6:05:35 hour(s):minute(s):second(s)
- Where
- Lithuania (Vilnius)
- When
The fastest 100 km ultra distance (male) as sanctioned by the IAU (International Association of Ultrarunners) is 6 hours 5 minutes 35 seconds, achieved by Aleksandr Sorokin (Lithuania) in Vilnius, Lithuania, on 14 May 2023.
Sorokin, who was competing at the World’s Fastest Run event in Vilnius, beat his own 100-km record by six seconds.