| Rockford to Noventa Vicentina | 4,666.29 mi (7,509.67 km) |
| Rockford to Novi di Modena | 4,658.55 mi (7,497.21 km) |
| Rockford to Novi Ligure | 4,581.75 mi (7,373.62 km) |
| Rockford to Nuoro | 4,791.45 mi (7,711.09 km) |
| Rockford to Occhiobello | 4,683.56 mi (7,537.47 km) |
| Rockford to Oderzo | 4,681.48 mi (7,534.12 km) |
| Rockford to Oggiono | 4,561.37 mi (7,340.82 km) |
| Rockford to Olbia | 4,772.51 mi (7,680.61 km) |
| Rockford to Oleggio | 4,541.15 mi (7,308.27 km) |
| Rockford to Olgiate Comasco | 4,546.55 mi (7,316.97 km) |
| Rockford to Olgiate Olona | 4,549.49 mi (7,321.70 km) |
| Rockford to Omegna | 4,520.97 mi (7,275.80 km) |
| Rockford to Opera | 4,572.76 mi (7,359.14 km) |
| Rockford to Oppeano | 4,652.17 mi (7,486.95 km) |
| Rockford to Orbassano | 4,522.39 mi (7,278.09 km) |
