| Aalten to Navodari | 1,137.80 mi (1,831.12 km) |
| Aalten to Negresti-Oas | 798.10 mi (1,284.41 km) |
| Aalten to Nehoiu | 1,004.24 mi (1,616.16 km) |
| Aalten to Ocna Mures | 866.60 mi (1,394.66 km) |
| Aalten to Odobesti | 1,019.54 mi (1,640.79 km) |
| Aalten to Odorheiu Secuiesc | 927.68 mi (1,492.96 km) |
| Aalten to Oltenita | 1,068.63 mi (1,719.79 km) |
| Aalten to Onesti | 989.65 mi (1,592.69 km) |
| Aalten to Oradea | 763.77 mi (1,229.17 km) |
| Aalten to Orastie | 861.14 mi (1,385.87 km) |
| Aalten to Oravita | 837.12 mi (1,347.22 km) |
| Aalten to Orsova | 877.76 mi (1,412.62 km) |
| Aalten to Otelu Rosu | 841.75 mi (1,354.67 km) |
| Aalten to Otopeni | 1,026.97 mi (1,652.75 km) |
| Aalten to Ovidiu | 1,137.70 mi (1,830.95 km) |
