In the selection screen, either in drive or fly mode, the selected level is kept. So while doing AllRaces%, after you have finished Drive, you have to switch to the main screen to go to start Fly. So the first strat other than "git gud" is:

• Select the first Fly track before starting the AllTracks%.

Spamming "next" after each track is trivial now, I'm aiming for sub 1h