From the GRA (Rome's orbital) take the exit 30 toward Fiumicino, then follow the signs for Fiera Roma. 5,000 car spaces.
From Tuscolana, Tiburtina, Ostiense train stations, which are connected to the A and B lines of the underground (Metropolitana) take the train FR 1 toward Fiumicino and get off at Fiera Roma stop. Fare 1,50 €.
From Roma Fiumicino airport, it is possible to reach Fiera Roma with the FR 1 train, Fiera di Roma stop (fare 8,00 €), alternatively by taxi or Cotral buses.