| South San Francisco to Cividale del Friuli | 6,035.22 mi (9,712.74 km) |
| South San Francisco to Civita Castellana | 6,225.34 mi (10,018.71 km) |
| South San Francisco to Civitanova Marche | 6,204.87 mi (9,985.78 km) |
| South San Francisco to Civitavecchia | 6,218.90 mi (10,008.35 km) |
| South San Francisco to Civitella in Val di Chiana | 6,141.61 mi (9,883.97 km) |
| South San Francisco to Clusone | 5,952.33 mi (9,579.36 km) |
| South San Francisco to Coccaglio | 5,971.05 mi (9,609.48 km) |
| South San Francisco to Codigoro | 6,072.20 mi (9,772.25 km) |
| South San Francisco to Codogno | 5,985.82 mi (9,633.25 km) |
| South San Francisco to Codroipo | 6,031.05 mi (9,706.04 km) |
| South San Francisco to Cogoleto | 5,997.89 mi (9,652.67 km) |
| South San Francisco to Colle di Val d'Elsa | 6,125.84 mi (9,858.58 km) |
| South San Francisco to Colle Salvetti | 6,095.75 mi (9,810.16 km) |
| South San Francisco to Collecchio | 6,023.43 mi (9,693.78 km) |
| South San Francisco to Colleferro | 6,274.99 mi (10,098.62 km) |
