| Tucson Mountains to Noventa Vicentina | 5,984.92 mi (9,631.80 km) |
| Tucson Mountains to Novi di Modena | 5,981.65 mi (9,626.53 km) |
| Tucson Mountains to Novi Ligure | 5,912.65 mi (9,515.50 km) |
| Tucson Mountains to Nuoro | 6,142.15 mi (9,884.83 km) |
| Tucson Mountains to Occhiobello | 6,004.10 mi (9,662.67 km) |
| Tucson Mountains to Oderzo | 5,993.64 mi (9,645.84 km) |
| Tucson Mountains to Oggiono | 5,884.69 mi (9,470.49 km) |
| Tucson Mountains to Olbia | 6,120.13 mi (9,849.40 km) |
| Tucson Mountains to Oleggio | 5,867.88 mi (9,443.44 km) |
| Tucson Mountains to Olgiate Comasco | 5,871.15 mi (9,448.70 km) |
| Tucson Mountains to Olgiate Olona | 5,875.22 mi (9,455.25 km) |
| Tucson Mountains to Omegna | 5,846.86 mi (9,409.61 km) |
| Tucson Mountains to Opera | 5,898.80 mi (9,493.20 km) |
| Tucson Mountains to Oppeano | 5,971.95 mi (9,610.93 km) |
| Tucson Mountains to Orbassano | 5,855.87 mi (9,424.12 km) |
