| Isernia to Piazzola sul Brenta | 298.42 mi (480.26 km) |
| Isernia to Pietrasanta | 260.31 mi (418.93 km) |
| Isernia to Pieve di Soligo | 313.30 mi (504.21 km) |
| Isernia to Pinerolo | 414.95 mi (667.80 km) |
| Isernia to Pioltello | 364.37 mi (586.40 km) |
| Isernia to Piombino | 211.16 mi (339.83 km) |
| Isernia to Piombino Dese | 298.48 mi (480.36 km) |
| Isernia to Piossasco | 413.17 mi (664.93 km) |
| Isernia to Piove di Sacco | 278.15 mi (447.64 km) |
| Isernia to Pisa | 243.67 mi (392.14 km) |
| Isernia to Pisticci | 147.02 mi (236.60 km) |
| Isernia to Pistoia | 233.06 mi (375.08 km) |
| Isernia to Pizzo | 222.83 mi (358.61 km) |
| Isernia to Podenzano | 325.50 mi (523.85 km) |
| Isernia to Poggibonsi | 203.27 mi (327.13 km) |
