| Hellendoorn to Navodari | 1,152.41 mi (1,854.63 km) |
| Hellendoorn to Negresti-Oas | 810.56 mi (1,304.46 km) |
| Hellendoorn to Nehoiu | 1,019.03 mi (1,639.97 km) |
| Hellendoorn to Ocna Mures | 881.58 mi (1,418.76 km) |
| Hellendoorn to Odobesti | 1,033.16 mi (1,662.71 km) |
| Hellendoorn to Odorheiu Secuiesc | 941.68 mi (1,515.49 km) |
| Hellendoorn to Oltenita | 1,084.95 mi (1,746.06 km) |
| Hellendoorn to Onesti | 1,002.69 mi (1,613.67 km) |
| Hellendoorn to Oradea | 779.09 mi (1,253.83 km) |
| Hellendoorn to Orastie | 877.58 mi (1,412.33 km) |
| Hellendoorn to Oravita | 856.15 mi (1,377.84 km) |
| Hellendoorn to Orsova | 896.61 mi (1,442.96 km) |
| Hellendoorn to Otelu Rosu | 859.46 mi (1,383.16 km) |
| Hellendoorn to Otopeni | 1,043.10 mi (1,678.70 km) |
| Hellendoorn to Ovidiu | 1,152.42 mi (1,854.63 km) |
