this is more spec than fantasy, but whatevs
i believe they are heading to South America first, since the race (for the most part) goes there every other season (2-3 legs)
(S2, S5, S7, S9, S11, S13, S16, S18?)
from there I believe they'll head in a westernly route, likely stopping somewhere in Australia/that general vacinity (1 leg...maybe 2)
then on to SE/E Asia for 2 legs
after that either Indi/Middle East for a couple legs at most
then East Africa and from there finish off the race in Europe before heading to the East Coast for the Finale