| Sierpc to Castrovillari | 917.55 mi (1,476.65 km) |
| Sierpc to Catania | 1,085.43 mi (1,746.83 km) |
| Sierpc to Catanzaro | 977.11 mi (1,572.51 km) |
| Sierpc to Cattolica | 692.50 mi (1,114.47 km) |
| Sierpc to Cava de' Tirreni | 873.42 mi (1,405.64 km) |
| Sierpc to Cavallino | 871.01 mi (1,401.75 km) |
| Sierpc to Cavarzere | 635.32 mi (1,022.45 km) |
| Sierpc to Cave | 826.16 mi (1,329.58 km) |
| Sierpc to Cavriago | 700.63 mi (1,127.55 km) |
| Sierpc to Cavriglia | 747.81 mi (1,203.48 km) |
| Sierpc to Cazzago San Martino | 664.96 mi (1,070.14 km) |
| Sierpc to Ceccano | 835.67 mi (1,344.88 km) |
| Sierpc to Cecina | 782.94 mi (1,260.02 km) |
| Sierpc to Cefalu | 1,061.12 mi (1,707.70 km) |
| Sierpc to Ceglie Messapico | 851.33 mi (1,370.09 km) |
