"While harnessed together, the two tribes must wade around an oval course while carrying a fifteen-pound backpack each. Players can drop out of the challenge at will, but they must give their pack to someone before unclipping themselves from the rope. The first tribe to catch the opponent and tackle one of their members wins." ~ @SurvivorWiki
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The winning tribe can also send someone from the losing tribe to Exile Island.
This castaway will skip the tribal council.
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They send Cecilia.
Proceed to exile island.