| Korydallos to Navodari | 508.12 mi (817.74 km) |
| Korydallos to Negresti-Oas | 683.16 mi (1,099.44 km) |
| Korydallos to Nehoiu | 527.24 mi (848.50 km) |
| Korydallos to Ocna Mures | 580.95 mi (934.94 km) |
| Korydallos to Odobesti | 565.63 mi (910.30 km) |
| Korydallos to Odorheiu Secuiesc | 581.74 mi (936.21 km) |
| Korydallos to Oltenita | 449.43 mi (723.29 km) |
| Korydallos to Onesti | 593.56 mi (955.25 km) |
| Korydallos to Oradea | 634.08 mi (1,020.45 km) |
| Korydallos to Orastie | 544.03 mi (875.52 km) |
| Korydallos to Oravita | 498.03 mi (801.50 km) |
| Korydallos to Orsova | 470.33 mi (756.92 km) |
| Korydallos to Otelu Rosu | 524.89 mi (844.74 km) |
| Korydallos to Otopeni | 470.74 mi (757.58 km) |
| Korydallos to Ovidiu | 503.73 mi (810.68 km) |
