| Cities | Distance |
|---|---|
| Isernia to Smolyan | 540.19 mi (869.35 km) |
| Isernia to Sofia | 471.53 mi (758.85 km) |
| Isernia to Sopot | 543.07 mi (873.98 km) |
| Isernia to Sozopol | 692.58 mi (1,114.61 km) |
| Isernia to Sredets | 667.06 mi (1,073.53 km) |
| Isernia to Stamboliyski | 530.58 mi (853.88 km) |
| Isernia to Stara Zagora | 588.06 mi (946.40 km) |
| Isernia to Svilengrad | 616.76 mi (992.57 km) |
| Isernia to Svishtov | 581.36 mi (935.61 km) |
| Isernia to Targovishte | 639.12 mi (1,028.56 km) |
| Isernia to Teteven | 520.39 mi (837.48 km) |
| Isernia to Troyan | 542.78 mi (873.52 km) |
| Isernia to Tryavna | 582.17 mi (936.90 km) |
| Isernia to Tutrakan | 648.88 mi (1,044.27 km) |
| Isernia to Varna | 705.75 mi (1,135.80 km) |