| South San Francisco to Noventa Vicentina | 6,030.44 mi (9,705.05 km) |
| South San Francisco to Novi di Modena | 6,034.81 mi (9,712.09 km) |
| South San Francisco to Novi Ligure | 5,981.50 mi (9,626.29 km) |
| South San Francisco to Nuoro | 6,245.09 mi (10,050.49 km) |
| South San Francisco to Occhiobello | 6,052.30 mi (9,740.23 km) |
| South San Francisco to Oderzo | 6,028.38 mi (9,701.74 km) |
| South San Francisco to Oggiono | 5,940.90 mi (9,560.96 km) |
| South San Francisco to Olbia | 6,216.77 mi (10,004.92 km) |
| South San Francisco to Oleggio | 5,930.49 mi (9,544.20 km) |
| South San Francisco to Olgiate Comasco | 5,929.93 mi (9,543.31 km) |
| South San Francisco to Olgiate Olona | 5,935.86 mi (9,552.84 km) |
| South San Francisco to Omegna | 5,908.56 mi (9,508.91 km) |
| South San Francisco to Opera | 5,959.35 mi (9,590.64 km) |
| South San Francisco to Oppeano | 6,019.75 mi (9,687.86 km) |
| South San Francisco to Orbassano | 5,930.98 mi (9,544.99 km) |
