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Max & Benj Cave travel to Croatia to meet up with local parkour experts and undertake an epic run in an abandoned aluminium factory.
A challenge to race each other and a labyrinth of narrow streets and hidden passages to navigate will make this one of the trickiest challenges.
Parkour athletes Max & Benj Cave look back over their travels so far and discuss the best places for practising parkour.
Brothers Max & Benj Cave undertake a run where they attempt to escape from Lisbon castle without using any conventional exit routes.