| Isernia to Pergine Valsugana | 342.83 mi (551.73 km) |
| Isernia to Perugia | 140.73 mi (226.48 km) |
| Isernia to Pesaro | 173.71 mi (279.57 km) |
| Isernia to Pescantina | 316.83 mi (509.88 km) |
| Isernia to Pescara | 59.54 mi (95.82 km) |
| Isernia to Peschiera del Garda | 319.13 mi (513.59 km) |
| Isernia to Pescia | 240.10 mi (386.40 km) |
| Isernia to Petilia Policastro | 217.78 mi (350.49 km) |
| Isernia to Piacenza | 329.73 mi (530.65 km) |
| Isernia to Pianella | 55.94 mi (90.02 km) |
| Isernia to Pianezza | 414.21 mi (666.60 km) |
| Isernia to Pianiga | 288.86 mi (464.88 km) |
| Isernia to Piano di Sorrento | 67.58 mi (108.76 km) |
| Isernia to Pianoro | 241.79 mi (389.13 km) |
| Isernia to Piazza Armerina | 291.62 mi (469.31 km) |
