Hero's 2005 in Seoul was a mixed martial arts event held by the Hero's promotion on November 5, 2005 at the Olympic Gymnasium 1 in Seoul, South Korea.It was the first event held by Hero's outside of Japan.
| Release Date | — | |
|---|---|---|
| Status | Released | |
| Original Title | K1 HERO's 3.1 | |
| Runtime | 2h 44min | |
| Budget | — | |
| Revenue | — | |
| Language | — | |
| Original Language | English | |
| Production Countries | — | |
| Production Companies | ||