| South San Francisco to Casamassima | 6,429.15 mi (10,346.71 km) |
| South San Francisco to Casandrino | 6,356.33 mi (10,229.53 km) |
| South San Francisco to Casapulla | 6,349.54 mi (10,218.59 km) |
| South San Francisco to Casarano | 6,518.12 mi (10,489.91 km) |
| South San Francisco to Casatenovo | 5,944.54 mi (9,566.81 km) |
| South San Francisco to Casciana Terme | 6,103.74 mi (9,823.03 km) |
| South San Francisco to Cascina | 6,093.00 mi (9,805.73 km) |
| South San Francisco to Caselle Torinese | 5,924.89 mi (9,535.19 km) |
| South San Francisco to Caserta | 6,350.95 mi (10,220.87 km) |
| South San Francisco to Casier | 6,030.63 mi (9,705.35 km) |
| South San Francisco to Casorate Primo | 5,957.28 mi (9,587.32 km) |
| South San Francisco to Casoria | 6,359.68 mi (10,234.92 km) |
| South San Francisco to Cassano al Ionio | 6,481.58 mi (10,431.09 km) |
| South San Francisco to Cassano d'Adda | 5,959.59 mi (9,591.04 km) |
| South San Francisco to Cassano delle Murge | 6,429.04 mi (10,346.54 km) |
