Mild spoilers ahead.
A fun and engaging watch with some good action and beautiful scenery. The reason for the 4 star is team Russia, poor attitude and such a ridiculously easy course for them. SEA had less transport but still more than the other 2 teams, however at least that was in notoriously unreliable countries meaning they had to work together better. North America had it so much harder than others. So all in the courses we're unreasonably uneven, however Russia teams lack of experience on actual activity cost them in the end so you could argue that balanced it out. Right team won and they handled the interviews filming very well.