| Dokkum to Navodari | 1,194.56 mi (1,922.46 km) |
| Dokkum to Negresti-Oas | 849.23 mi (1,366.70 km) |
| Dokkum to Nehoiu | 1,061.80 mi (1,708.80 km) |
| Dokkum to Ocna Mures | 925.04 mi (1,488.71 km) |
| Dokkum to Odobesti | 1,073.53 mi (1,727.68 km) |
| Dokkum to Odorheiu Secuiesc | 983.04 mi (1,582.05 km) |
| Dokkum to Oltenita | 1,130.63 mi (1,819.58 km) |
| Dokkum to Onesti | 1,041.97 mi (1,676.88 km) |
| Dokkum to Oradea | 823.53 mi (1,325.35 km) |
| Dokkum to Orastie | 923.92 mi (1,486.90 km) |
| Dokkum to Oravita | 907.49 mi (1,460.47 km) |
| Dokkum to Orsova | 947.54 mi (1,524.91 km) |
| Dokkum to Otelu Rosu | 908.27 mi (1,461.73 km) |
| Dokkum to Otopeni | 1,088.46 mi (1,751.71 km) |
| Dokkum to Ovidiu | 1,194.77 mi (1,922.80 km) |
