| Upper Montclair to Noventa Vicentina | 4,125.83 mi (6,639.88 km) |
| Upper Montclair to Novi di Modena | 4,111.95 mi (6,617.54 km) |
| Upper Montclair to Novi Ligure | 4,025.27 mi (6,478.05 km) |
| Upper Montclair to Nuoro | 4,199.79 mi (6,758.90 km) |
| Upper Montclair to Occhiobello | 4,140.07 mi (6,662.79 km) |
| Upper Montclair to Oderzo | 4,149.56 mi (6,678.08 km) |
| Upper Montclair to Oggiono | 4,016.46 mi (6,463.86 km) |
| Upper Montclair to Olbia | 4,186.32 mi (6,737.24 km) |
| Upper Montclair to Oleggio | 3,991.67 mi (6,423.97 km) |
| Upper Montclair to Olgiate Comasco | 4,000.09 mi (6,437.53 km) |
| Upper Montclair to Olgiate Olona | 4,001.32 mi (6,439.50 km) |
| Upper Montclair to Omegna | 3,973.15 mi (6,394.16 km) |
| Upper Montclair to Opera | 4,023.65 mi (6,475.43 km) |
| Upper Montclair to Oppeano | 4,110.39 mi (6,615.04 km) |
| Upper Montclair to Orbassano | 3,963.16 mi (6,378.09 km) |
