| Cities | Distance |
|---|---|
| Grevena to Oria | 201.99 mi (325.07 km) |
| Grevena to Oristano | 678.95 mi (1,092.67 km) |
| Grevena to Orta Nova | 311.44 mi (501.22 km) |
| Grevena to Orte | 497.06 mi (799.95 km) |
| Grevena to Ortona | 397.19 mi (639.22 km) |
| Grevena to Orvieto | 515.67 mi (829.88 km) |
| Grevena to Orzinuovi | 688.22 mi (1,107.58 km) |
| Grevena to Osimo | 471.55 mi (758.89 km) |
| Grevena to Ospitaletto | 687.43 mi (1,106.32 km) |
| Grevena to Ostuni | 207.13 mi (333.34 km) |
| Grevena to Ottaviano | 369.02 mi (593.89 km) |
| Grevena to Ovada | 723.33 mi (1,164.08 km) |
| Grevena to Ozieri | 654.72 mi (1,053.68 km) |
| Grevena to Paceco | 497.83 mi (801.18 km) |
| Grevena to Pachino | 414.01 mi (666.29 km) |