Rio de Janeiro is bracing for up to 100,000 Argentine fans arriving by car, bus and motorhome for the final against Germany at Maracana Stadium.
Argentina has sent the biggest contingent of fans to Brazil during the month-long tournament, flooding cities to follow their team even though many have not had tickets to the games.
Tens of thousands who were in Sao Paulo for Wednesday's victory over the Netherlands hit the road for the six-hour trek across the southeastern region.
Authorities will deploy some 11,500 police officers around the stadium for the final, a twofold increase from the six other cup games played there, according to the G1 news website. The justice ministry said it would double the number of soldiers to 1,000.