Pre-season matches are the practice matches that are held between various renowned football clubs, before the inauguration of the new season, for a better start.
Real Madrid and Barcelona will travel to South Florida this summer to play their first-ever Clasico in the United States.
The arch-rivals will face off July 29 at Miami's Hard Rock Stadium as part of the International Champions Cup, a tourney co-founded by Stephen Ross, owner of the NFL Miami Dolphins, reports Efe.
It will be only the second Clasico played outside Spain, following a 1982 contest in Venezuela that ended in a 1-0 victory for Real Madrid.
"I am thrilled to bring the International Champions Cup back to the city of Miami. The opportunity to showcase two of the most storied clubs in the history of the sport is why we created this tournament," Ross said at a press conference on Friday.
"When they come to play a game, there's nothing friendly about it. It's like a war. They don't like to lose," he added.
Commenting on the development, Real Madrid's director of institutional relations Emilio Butragueno said: " We are fully aware of how passionate people are about football here in Miami."