From Stunts Wiki
The Stunts Competition Archive is an initiative which aims to preserve tracks and winning replays from Stunts competitions, keeping them safe from link rot and oblivion. The large collection of .TRK and .RPL files is accompanied by a full record of race winners and competition rules. The Competition Archive was originally assembled by Krys TOFF and Zak McKracken, as part of the preparations for the second World Stunts Meeting in 2005. Since then, biannual updates have been prepared by Duplode and distributed through ZakStunts.
ZakStunts downloads page, home of the latest version of the Competition Archive.