You can take the grass shortcut on section 1, but the double shortcut on section 3 is a must. Keep in mind the shock tends to happen here, so use a dodge item at or before the shortcut.
Arriving from Mario Bros. Circuit, Whistlestop Summit, Desert Hills, Wario Stadium, or at the end of the Ice Rally
Be careful not to overbag the route since you want to be in the front for the final lap since this version does not have many shortcuts on the track itself to make a good comeback.
Arriving from DK Spaceport, Koopa Troopa Beach, or Faraway Oasis
Bag the route as usual, and then for the final lap, there’s a big grass shortcut in the halfpipe.
Arriving from Peach Stadium, Moo Moo Meadows, or Choco Mountain
A comeback can be difficult here due to a lack of shortcuts, and there isn’t really a good shock spot aside from the water section where there’s bad acceleration.