| San Marcos to Cividale del Friuli | 6,155.31 mi (9,906.01 km) |
| San Marcos to Civita Castellana | 6,324.65 mi (10,178.53 km) |
| San Marcos to Civitanova Marche | 6,314.21 mi (10,161.73 km) |
| San Marcos to Civitavecchia | 6,314.72 mi (10,162.55 km) |
| San Marcos to Civitella in Val di Chiana | 6,242.94 mi (10,047.05 km) |
| San Marcos to Clusone | 6,057.60 mi (9,748.77 km) |
| San Marcos to Coccaglio | 6,074.97 mi (9,776.72 km) |
| San Marcos to Codigoro | 6,181.45 mi (9,948.08 km) |
| San Marcos to Codogno | 6,086.80 mi (9,795.76 km) |
| San Marcos to Codroipo | 6,148.73 mi (9,895.42 km) |
| San Marcos to Cogoleto | 6,091.05 mi (9,802.59 km) |
| San Marcos to Colle di Val d'Elsa | 6,224.65 mi (10,017.61 km) |
| San Marcos to Colle Salvetti | 6,192.77 mi (9,966.30 km) |
| San Marcos to Collecchio | 6,124.59 mi (9,856.58 km) |
| San Marcos to Colleferro | 6,374.45 mi (10,258.69 km) |
