| Grass Valley to Noventa Vicentina | 5,899.36 mi (9,494.10 km) |
| Grass Valley to Novi di Modena | 5,903.66 mi (9,501.02 km) |
| Grass Valley to Novi Ligure | 5,850.23 mi (9,415.04 km) |
| Grass Valley to Nuoro | 6,113.79 mi (9,839.19 km) |
| Grass Valley to Occhiobello | 5,921.19 mi (9,529.24 km) |
| Grass Valley to Oderzo | 5,897.43 mi (9,491.00 km) |
| Grass Valley to Oggiono | 5,809.71 mi (9,349.83 km) |
| Grass Valley to Olbia | 6,085.46 mi (9,793.60 km) |
| Grass Valley to Oleggio | 5,799.25 mi (9,332.99 km) |
| Grass Valley to Olgiate Comasco | 5,798.73 mi (9,332.15 km) |
| Grass Valley to Olgiate Olona | 5,804.64 mi (9,341.66 km) |
| Grass Valley to Omegna | 5,777.33 mi (9,297.72 km) |
| Grass Valley to Opera | 5,828.13 mi (9,379.47 km) |
| Grass Valley to Oppeano | 5,888.65 mi (9,476.87 km) |
| Grass Valley to Orbassano | 5,799.69 mi (9,333.69 km) |
