| Isernia to Paola | 180.97 mi (291.24 km) |
| Isernia to Parabiago | 380.42 mi (612.23 km) |
| Isernia to Parabita | 230.08 mi (370.27 km) |
| Isernia to Parma | 296.00 mi (476.36 km) |
| Isernia to Partanna | 277.12 mi (445.98 km) |
| Isernia to Partinico | 252.60 mi (406.52 km) |
| Isernia to Pasian di Prato | 311.60 mi (501.48 km) |
| Isernia to Paterno | 281.07 mi (452.34 km) |
| Isernia to Patti | 242.40 mi (390.10 km) |
| Isernia to Paullo | 357.99 mi (576.13 km) |
| Isernia to Pavia | 355.45 mi (572.03 km) |
| Isernia to Pavullo nel Frignano | 255.37 mi (410.99 km) |
| Isernia to Pedara | 278.90 mi (448.85 km) |
| Isernia to Pellezzano | 66.03 mi (106.27 km) |
| Isernia to Penne | 60.84 mi (97.91 km) |
