| Rockford to Nasaud | 5,036.54 mi (8,105.53 km) |
| Rockford to Navodari | 5,324.42 mi (8,568.83 km) |
| Rockford to Negresti-Oas | 4,975.49 mi (8,007.28 km) |
| Rockford to Nehoiu | 5,195.14 mi (8,360.78 km) |
| Rockford to Ocna Mures | 5,061.57 mi (8,145.81 km) |
| Rockford to Odobesti | 5,199.85 mi (8,368.34 km) |
| Rockford to Odorheiu Secuiesc | 5,113.87 mi (8,229.98 km) |
| Rockford to Oltenita | 5,269.77 mi (8,480.88 km) |
| Rockford to Onesti | 5,165.37 mi (8,312.87 km) |
| Rockford to Oradea | 4,962.77 mi (7,986.80 km) |
| Rockford to Orastie | 5,065.16 mi (8,151.59 km) |
| Rockford to Oravita | 5,051.22 mi (8,129.15 km) |
| Rockford to Orsova | 5,091.39 mi (8,193.79 km) |
| Rockford to Otelu Rosu | 5,051.77 mi (8,130.03 km) |
| Rockford to Otopeni | 5,227.27 mi (8,412.48 km) |
