| Isernia to Petite-Synthe | 861.25 mi (1,386.04 km) |
| Isernia to Pfastatt | 545.12 mi (877.28 km) |
| Isernia to Pia | 584.49 mi (940.64 km) |
| Isernia to Pibrac | 672.57 mi (1,082.39 km) |
| Isernia to Pierre-Benite | 548.85 mi (883.29 km) |
| Isernia to Pierrefitte-sur-Seine | 767.96 mi (1,235.92 km) |
| Isernia to Pierrelatte | 518.64 mi (834.66 km) |
| Isernia to Pierrelaye | 777.98 mi (1,252.04 km) |
| Isernia to Pithiviers | 740.44 mi (1,191.62 km) |
| Isernia to Plabennec | 1,024.52 mi (1,648.80 km) |
| Isernia to Plaisance-du-Touch | 671.53 mi (1,080.73 km) |
| Isernia to Plaisir | 777.15 mi (1,250.71 km) |
| Isernia to Plan-de-Cuques | 462.97 mi (745.07 km) |
| Isernia to Plerin | 955.24 mi (1,537.31 km) |
| Isernia to Ploemeur | 963.18 mi (1,550.09 km) |
