| Cities | Distance |
|---|
| Isernia to Opwijk | 804.14 mi (1,294.15 km) |
| Isernia to Ostend | 854.06 mi (1,374.47 km) |
| Isernia to Oud-Heverlee | 783.58 mi (1,261.06 km) |
| Isernia to Oud-Turnhout | 801.45 mi (1,289.81 km) |
| Isernia to Oudenaarde | 814.91 mi (1,311.47 km) |
| Isernia to Oudenburg | 849.53 mi (1,367.18 km) |
| Isernia to Oupeye | 750.60 mi (1,207.98 km) |
| Isernia to Overijse | 784.62 mi (1,262.73 km) |
| Isernia to Overpelt | 784.82 mi (1,263.04 km) |
| Isernia to Paal | 781.19 mi (1,257.20 km) |
| Isernia to Peer | 779.17 mi (1,253.96 km) |
| Isernia to Pepinster | 738.22 mi (1,188.04 km) |
| Isernia to Peruwelz | 798.58 mi (1,285.19 km) |
| Isernia to Perwez | 768.29 mi (1,236.45 km) |
| Isernia to Philippeville | 753.61 mi (1,212.82 km) |
