| Redwood City to Cividale del Friuli | 6,039.21 mi (9,719.17 km) |
| Redwood City to Civita Castellana | 6,228.64 mi (10,024.03 km) |
| Redwood City to Civitanova Marche | 6,208.52 mi (9,991.65 km) |
| Redwood City to Civitavecchia | 6,222.08 mi (10,013.47 km) |
| Redwood City to Civitella in Val di Chiana | 6,144.97 mi (9,889.38 km) |
| Redwood City to Clusone | 5,955.79 mi (9,584.92 km) |
| Redwood City to Coccaglio | 5,974.47 mi (9,614.97 km) |
| Redwood City to Codigoro | 6,075.82 mi (9,778.08 km) |
| Redwood City to Codogno | 5,989.14 mi (9,638.58 km) |
| Redwood City to Codroipo | 6,034.96 mi (9,712.33 km) |
| Redwood City to Cogoleto | 6,000.93 mi (9,657.57 km) |
| Redwood City to Colle di Val d'Elsa | 6,129.10 mi (9,863.84 km) |
| Redwood City to Colle Salvetti | 6,098.95 mi (9,815.31 km) |
| Redwood City to Collecchio | 6,026.76 mi (9,699.14 km) |
| Redwood City to Colleferro | 6,278.31 mi (10,103.96 km) |
