| Williamstown to Noventa Vicentina | 4,206.01 mi (6,768.91 km) |
| Williamstown to Novi di Modena | 4,191.67 mi (6,745.84 km) |
| Williamstown to Novi Ligure | 4,104.29 mi (6,605.22 km) |
| Williamstown to Nuoro | 4,275.42 mi (6,880.62 km) |
| Williamstown to Occhiobello | 4,220.00 mi (6,791.43 km) |
| Williamstown to Oderzo | 4,230.35 mi (6,808.09 km) |
| Williamstown to Oggiono | 4,096.41 mi (6,592.53 km) |
| Williamstown to Olbia | 4,262.51 mi (6,859.85 km) |
| Williamstown to Oleggio | 4,071.29 mi (6,552.11 km) |
| Williamstown to Olgiate Comasco | 4,079.94 mi (6,566.03 km) |
| Williamstown to Olgiate Olona | 4,081.03 mi (6,567.79 km) |
| Williamstown to Omegna | 4,052.92 mi (6,522.54 km) |
| Williamstown to Opera | 4,103.26 mi (6,603.56 km) |
| Williamstown to Oppeano | 4,190.49 mi (6,743.94 km) |
| Williamstown to Orbassano | 4,042.02 mi (6,505.00 km) |
