| Wittmund to Navodari | 1,134.54 mi (1,825.86 km) |
| Wittmund to Negresti-Oas | 787.25 mi (1,266.96 km) |
| Wittmund to Nehoiu | 1,002.56 mi (1,613.46 km) |
| Wittmund to Ocna Mures | 866.77 mi (1,394.94 km) |
| Wittmund to Odobesti | 1,012.29 mi (1,629.13 km) |
| Wittmund to Odorheiu Secuiesc | 922.81 mi (1,485.11 km) |
| Wittmund to Oltenita | 1,073.90 mi (1,728.27 km) |
| Wittmund to Onesti | 979.94 mi (1,577.07 km) |
| Wittmund to Oradea | 766.52 mi (1,233.59 km) |
| Wittmund to Orastie | 868.37 mi (1,397.50 km) |
| Wittmund to Oravita | 857.50 mi (1,380.01 km) |
| Wittmund to Orsova | 896.90 mi (1,443.43 km) |
| Wittmund to Otelu Rosu | 855.37 mi (1,376.58 km) |
| Wittmund to Otopeni | 1,031.51 mi (1,660.06 km) |
| Wittmund to Ovidiu | 1,134.92 mi (1,826.48 km) |
