In order to arrive in Barga, you should reach Lucca, easily accessible from Florence-Pisa highway (aka Firenze-mare). Secondly, once you past the pay-toll, you will turn left in Viale Europa Street, continue on the bridge over the railroad, and proceed straight on Lucca’s ring road (keeping the city ramparts on your right). After that, you will follow Viale Papi, Viale del Prete, pass Piazzale Martiri della Libertà, and finally hit Viale Batoni. On Viale Batoni, keep the left lane in order to turn left after the roundabout on via Civitali. Here, proceed straight after the first traffic light and then bear right at the end of the road on Via del Brennero. At the end of this long stretch of road (approx 7 km), which coasts the river Serchio (even though you don’t see it), before Ponte a Moriano, turn left on the bridge (the junction is well marked). Follow the road past the town of Borgo a Mozzano. The first bridge across the river will take you back to the right bank of the river, which is also the right one for Barga. Before the town of Fornaci di Barga you will see indications for Barga, which at this point will be 4 km away.