| Cities | Distance |
|---|---|
| Ercolano to Oria | 173.35 mi (278.98 km) |
| Ercolano to Oristano | 309.37 mi (497.89 km) |
| Ercolano to Orta Nova | 79.84 mi (128.49 km) |
| Ercolano to Orte | 153.11 mi (246.41 km) |
| Ercolano to Ortona | 107.13 mi (172.40 km) |
| Ercolano to Orvieto | 175.75 mi (282.84 km) |
| Ercolano to Orzinuovi | 388.02 mi (624.45 km) |
| Ercolano to Osimo | 190.64 mi (306.80 km) |
| Ercolano to Ospitaletto | 392.78 mi (632.12 km) |
| Ercolano to Ostuni | 169.25 mi (272.38 km) |
| Ercolano to Ottaviano | 7.51 mi (12.08 km) |
| Ercolano to Ovada | 392.49 mi (631.65 km) |
| Ercolano to Ozieri | 280.45 mi (451.35 km) |
| Ercolano to Paceco | 217.04 mi (349.30 km) |
| Ercolano to Pachino | 285.00 mi (458.67 km) |