There isn't any road that leads directly to Briol, you can reach it only by walking or with a pickup.
The village closest to Briol is Barbiano, in the Val d'Isarco. Coming from the Brennero A22 motorway the exit
will be Chiusa / Klausen; going towards Ponte Gardena you will find a sign for Barbiano.
From Barbiano you can continue by walking (60 min) or with the Taxi-pickup.
The train station closest to Briol is Ponte Gardena or Chiusa.
From there you can reach Barbiano with a Taxi, then continue by walking (60 min) or with the Taxi-pickup.
Taxi Torggler +39 3483634210