Catch the bus from Sulmona for the 10 km trip. Buy a return ticket in Sulmona, as tickets can be hard to come by in the middle of the day in Pacentro. It is possible to take a 6.5 km walk through local farm lanes to or from Sulmona using Google Maps, passing olive groves, ruins and a quarry.
Cantelmo castle with 3 towers, started in the 9th Century. Pretty square - Piazza del Popolo with the church of Santa Maria Maggiore.
Ristorante Zio Carlo - no English spoken and only a verbal menu but great atmosphere and friendly service - Largo Mulino 2, 0864 41220