Originally published on ProWrestlingSheet.

Chris Hero's marathon wrestling match from back in June has been released online ... and the ambitious feat is even more impressive on video.

The 3-hour gauntlet match -- put on by Smash Wrestling in benefit of ALS Canada -- kicked off with Chris Hero beating Rip Impact via submission with a Fujiwara armbar ... in a mostly submission based contest.

Hero wrestled 9 other men during the course of the event ... including Rich Swann, Facade and Brent Banks -- but not all of his matches were a success.

If you got some free time, the full video is below -- even if you're just gonna skim.