| Colfontaine to Navodari | 1,225.81 mi (1,972.75 km) |
| Colfontaine to Negresti-Oas | 899.18 mi (1,447.09 km) |
| Colfontaine to Nehoiu | 1,092.52 mi (1,758.25 km) |
| Colfontaine to Ocna Mures | 955.54 mi (1,537.79 km) |
| Colfontaine to Odobesti | 1,113.18 mi (1,791.49 km) |
| Colfontaine to Odorheiu Secuiesc | 1,020.47 mi (1,642.29 km) |
| Colfontaine to Oltenita | 1,148.66 mi (1,848.59 km) |
| Colfontaine to Onesti | 1,086.14 mi (1,747.98 km) |
| Colfontaine to Oradea | 852.57 mi (1,372.07 km) |
| Colfontaine to Orastie | 942.93 mi (1,517.50 km) |
| Colfontaine to Oravita | 905.08 mi (1,456.59 km) |
| Colfontaine to Orsova | 946.12 mi (1,522.63 km) |
| Colfontaine to Otelu Rosu | 917.14 mi (1,475.99 km) |
| Colfontaine to Otopeni | 1,108.43 mi (1,783.85 km) |
| Colfontaine to Ovidiu | 1,225.21 mi (1,971.78 km) |
