As explained earlier, once the match starts, exit points can be found at random locations on the map.
To escape, stay in the exit zone for a set time. Defeat enemies that may follow and try to block your escape.

The Cloudrock Mountain map has a 25-minute play limit. Defeat monsters, fight other players, or gather items, then head to the exit to clear the game.
Like the starting point, exit locations are randomized each game.