KSW: Longest fights
The all-time KSW top 100, rebuilt from every completed KSW fight in our database.
Updated September 21, 2026
A fighter with a bout in the last 18 months. Country boards rank every fighter from that country and cannot be combined with the active filter.
| # | Fighter | Longest fights | Round | Fight | Date |
|---|---|---|---|---|---|
| T-1 |   Yasmin Guimaraes | 15:00 | 3 | Adrianna KreftFlyweight | Aug 19, 2023 |
| T-1 |   Emilia Czerwińska | 15:00 | 3 | Natalia Baczynska-KrawiecFlyweight | Dec 16, 2023 |
| T-1 |   Mafalda Carmona | 15:00 | 3 | Adrianna KreftFlyweight | May 11, 2024 |
| T-1 |  Wiktoria Czyzewska | 15:00 | 3 | Bianca SattelmayerFlyweight | Jul 19, 2025 |
| 5 |  Rayla Nascimento | 9:42 | 2 | Laura GrzybFlyweight | Jul 18, 2026 |
| 6 | Wiktoria Czyzewska | 2:09 | 1 | Erianny CastanedaFlyweight | Aug 24, 2024 |
| 7 | Wiktoria Czyzewska | 1:56 | 1 | Petra ČástkováFlyweight | Feb 17, 2024 |
| 8 |  Adrianna Kreft | 1:13 | 1 | Karolina OwczarzFlyweight | Apr 22, 2023 |
This board ranks single performances, not fighters — one fighter can hold more than one row.