| Madison to Nasaud | 5,004.29 mi (8,053.62 km) |
| Madison to Navodari | 5,292.07 mi (8,516.77 km) |
| Madison to Negresti-Oas | 4,943.28 mi (7,955.44 km) |
| Madison to Nehoiu | 5,163.25 mi (8,309.45 km) |
| Madison to Ocna Mures | 5,030.13 mi (8,095.21 km) |
| Madison to Odobesti | 5,167.35 mi (8,316.04 km) |
| Madison to Odorheiu Secuiesc | 5,081.83 mi (8,178.42 km) |
| Madison to Oltenita | 5,238.51 mi (8,430.56 km) |
| Madison to Onesti | 5,132.71 mi (8,260.30 km) |
| Madison to Oradea | 4,931.73 mi (7,936.86 km) |
| Madison to Orastie | 5,034.37 mi (8,102.03 km) |
| Madison to Oravita | 5,021.66 mi (8,081.58 km) |
| Madison to Orsova | 5,061.70 mi (8,146.03 km) |
| Madison to Otelu Rosu | 5,021.58 mi (8,081.45 km) |
| Madison to Otopeni | 5,195.99 mi (8,362.13 km) |
