| Foster City to Cividale del Friuli | 6,037.10 mi (9,715.77 km) |
| Foster City to Civita Castellana | 6,226.71 mi (10,020.92 km) |
| Foster City to Civitanova Marche | 6,206.50 mi (9,988.40 km) |
| Foster City to Civitavecchia | 6,220.18 mi (10,010.41 km) |
| Foster City to Civitella in Val di Chiana | 6,143.03 mi (9,886.25 km) |
| Foster City to Clusone | 5,953.82 mi (9,581.75 km) |
| Foster City to Coccaglio | 5,972.50 mi (9,611.82 km) |
| Foster City to Codigoro | 6,073.80 mi (9,774.84 km) |
| Foster City to Codogno | 5,987.20 mi (9,635.47 km) |
| Foster City to Codroipo | 6,032.87 mi (9,708.97 km) |
| Foster City to Cogoleto | 5,999.07 mi (9,654.57 km) |
| Foster City to Colle di Val d'Elsa | 6,127.18 mi (9,860.75 km) |
| Foster City to Colle Salvetti | 6,097.05 mi (9,812.25 km) |
| Foster City to Collecchio | 6,024.83 mi (9,696.02 km) |
| Foster City to Colleferro | 6,276.37 mi (10,100.84 km) |
