FAQ - Race Files
All race files in the game folders c:\Games\Supreme\...\Replays\ have the same format:
You can use every saved races as Guide.dat or as Replay_*.dat.
You can save every race in the mode Time Attack as long when not more than 4 lines ending with ,1, in the files *high_times.txt. Simply replace all redundant ,1, with ,0,. You can edit the files *high_times.txt anytime, even when you are playing - but check the data after you quit the game.
You can also save every race or every event (Half-pipe, Air) with the cheat "aja" + S, see next page.