The final four arrive in London, where driving on the left side of the road isn't the only thing that feels backwards. With only two teams left on each pack, these matchups are in for a battle royal and a surprise no one sees coming. After a shake up in the Pack Challenge, only one team is safe from elimination.

Starring:

Lindsey Vonn , Mitra Najibeh Yosri , Lucy Riles , Donna Modafferi , Linh Iacona , Chelsey Lowe , Vania Zuniga , Mark LeBlanc , Brian Calvert , Daniel Reese , Chisum Joe Johnson , Josh White , Kioni 'Kentucky' Russell Gallahue

Genre:

Reality-TV