After one team being eliminated, the remaining four pairs must now navigate to the fourth checkpoint, the remote outpost of Churchill, where polar bears can outnumber people. On Hudson Bay, at the edge of the Arctic, Churchill is not connected to the rest of Canada by road but by a twice-weekly train, and the teams have just three days to catch it. It’s a journey that will take them from Alberta’s major cities of Calgary and Edmonton, before the Rockies make way for Saskatchewan’s great prairies and badlands.
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