| Montfoort to Navodari | 1,206.42 mi (1,941.55 km) |
| Montfoort to Negresti-Oas | 867.61 mi (1,396.29 km) |
| Montfoort to Nehoiu | 1,072.80 mi (1,726.50 km) |
| Montfoort to Ocna Mures | 935.11 mi (1,504.91 km) |
| Montfoort to Odobesti | 1,088.63 mi (1,751.98 km) |
| Montfoort to Odorheiu Secuiesc | 996.63 mi (1,603.93 km) |
| Montfoort to Oltenita | 1,136.26 mi (1,828.63 km) |
| Montfoort to Onesti | 1,058.96 mi (1,704.23 km) |
| Montfoort to Oradea | 832.14 mi (1,339.20 km) |
| Montfoort to Orastie | 928.77 mi (1,494.72 km) |
| Montfoort to Oravita | 902.60 mi (1,452.59 km) |
| Montfoort to Orsova | 943.37 mi (1,518.22 km) |
| Montfoort to Otelu Rosu | 908.44 mi (1,461.99 km) |
| Montfoort to Otopeni | 1,094.75 mi (1,761.82 km) |
| Montfoort to Ovidiu | 1,206.27 mi (1,941.30 km) |
