This is driving me nuts so I guess we won't know the dealio untill the promo comes up
Malawi is really an ideal place to hide the racers from what I've seen so far
So far we know the Roadblock has something to do with the Maasai men ..hitting your mark etc..
then we have the night confessional with Uchenna & Joyce which fits in with the Phil interview which I won't repeat again so yeah I agree Slowhatch that this is where Phil was at the Pitstop at 3am, grassy area, mosquito's etc ..
So the Roadblock comes last
, probably near the Pitstop ..and the one of the Detour options something to do with the Sea adventure unless of course there is a Fast Forward and Shmirna takes it but that doesn't jive with the clue "Charla & Mirna gamble on an incredibly risky move that could mean the difference between life and death in the race." and