| Prospect Heights to Noventa Vicentina | 4,629.65 mi (7,450.70 km) |
| Prospect Heights to Novi di Modena | 4,621.40 mi (7,437.43 km) |
| Prospect Heights to Novi Ligure | 4,543.73 mi (7,312.42 km) |
| Prospect Heights to Nuoro | 4,750.68 mi (7,645.48 km) |
| Prospect Heights to Occhiobello | 4,646.69 mi (7,478.13 km) |
| Prospect Heights to Oderzo | 4,645.55 mi (7,476.30 km) |
| Prospect Heights to Oggiono | 4,524.27 mi (7,281.11 km) |
| Prospect Heights to Olbia | 4,732.18 mi (7,615.71 km) |
| Prospect Heights to Oleggio | 4,503.66 mi (7,247.93 km) |
| Prospect Heights to Olgiate Comasco | 4,509.31 mi (7,257.04 km) |
| Prospect Heights to Olgiate Olona | 4,512.12 mi (7,261.55 km) |
| Prospect Heights to Omegna | 4,483.60 mi (7,215.65 km) |
| Prospect Heights to Opera | 4,535.32 mi (7,298.90 km) |
| Prospect Heights to Oppeano | 4,615.41 mi (7,427.79 km) |
| Prospect Heights to Orbassano | 4,484.09 mi (7,216.44 km) |
