| Parkersburg to Noventa Vicentina | 4,500.36 mi (7,242.63 km) |
| Parkersburg to Novi di Modena | 4,488.11 mi (7,222.92 km) |
| Parkersburg to Novi Ligure | 4,403.86 mi (7,087.32 km) |
| Parkersburg to Nuoro | 4,587.33 mi (7,382.59 km) |
| Parkersburg to Occhiobello | 4,515.46 mi (7,266.93 km) |
| Parkersburg to Oderzo | 4,521.79 mi (7,277.12 km) |
| Parkersburg to Oggiono | 4,391.93 mi (7,068.14 km) |
| Parkersburg to Olbia | 4,572.59 mi (7,358.87 km) |
| Parkersburg to Oleggio | 4,368.32 mi (7,030.13 km) |
| Parkersburg to Olgiate Comasco | 4,375.95 mi (7,042.41 km) |
| Parkersburg to Olgiate Olona | 4,377.64 mi (7,045.13 km) |
| Parkersburg to Omegna | 4,349.31 mi (6,999.53 km) |
| Parkersburg to Opera | 4,400.27 mi (7,081.56 km) |
| Parkersburg to Oppeano | 4,485.25 mi (7,218.31 km) |
| Parkersburg to Orbassano | 4,342.32 mi (6,988.29 km) |
