My strategy is to really win all the minigames, get the 6 to 8 mini stars in the beginning, be captain on the boss battles and captain events, and stock up on slow dice blocks for the circular stretch. If you go left when the road splits for the last time and stop right before the 10 mini stars but a little after the center island and the mini ztars, if you get a six you can avoid all Bowser spaces, pick up 20 mini stars, land on a reverse space and hopefully get another high number, at least a 2 so you can pick up another ten mini stars. If you are lucky you can get another 6 on your reverse dice block and pick 40 total in your turn.