| Cobh to Navodari | 1,759.86 mi (2,832.22 km) |
| Cobh to Negresti-Oas | 1,427.51 mi (2,297.35 km) |
| Cobh to Nehoiu | 1,626.33 mi (2,617.32 km) |
| Cobh to Ocna Mures | 1,488.92 mi (2,396.18 km) |
| Cobh to Odobesti | 1,645.35 mi (2,647.94 km) |
| Cobh to Odorheiu Secuiesc | 1,552.78 mi (2,498.96 km) |
| Cobh to Oltenita | 1,683.93 mi (2,710.02 km) |
| Cobh to Onesti | 1,617.12 mi (2,602.51 km) |
| Cobh to Oradea | 1,385.74 mi (2,230.13 km) |
| Cobh to Orastie | 1,477.79 mi (2,378.27 km) |
| Cobh to Oravita | 1,440.38 mi (2,318.07 km) |
| Cobh to Orsova | 1,481.40 mi (2,384.08 km) |
| Cobh to Otelu Rosu | 1,452.56 mi (2,337.67 km) |
| Cobh to Otopeni | 1,643.52 mi (2,644.99 km) |
| Cobh to Ovidiu | 1,759.38 mi (2,831.44 km) |
