| Rock Island to Nasaud | 5,128.64 mi (8,253.75 km) |
| Rock Island to Navodari | 5,416.48 mi (8,716.98 km) |
| Rock Island to Negresti-Oas | 5,067.61 mi (8,155.53 km) |
| Rock Island to Nehoiu | 5,287.42 mi (8,509.28 km) |
| Rock Island to Ocna Mures | 5,154.05 mi (8,294.65 km) |
| Rock Island to Odobesti | 5,291.83 mi (8,516.38 km) |
| Rock Island to Odorheiu Secuiesc | 5,206.08 mi (8,378.37 km) |
| Rock Island to Oltenita | 5,362.34 mi (8,629.86 km) |
| Rock Island to Onesti | 5,257.27 mi (8,460.76 km) |
| Rock Island to Oradea | 5,055.43 mi (8,135.93 km) |
| Rock Island to Orastie | 5,157.93 mi (8,300.89 km) |
| Rock Island to Oravita | 5,144.49 mi (8,279.26 km) |
| Rock Island to Orsova | 5,184.61 mi (8,343.82 km) |
| Rock Island to Otelu Rosu | 5,144.79 mi (8,279.74 km) |
| Rock Island to Otopeni | 5,319.83 mi (8,561.44 km) |
