| Sierpc to Casamassima | 834.50 mi (1,343.00 km) |
| Sierpc to Casandrino | 863.72 mi (1,390.03 km) |
| Sierpc to Casapulla | 854.37 mi (1,374.98 km) |
| Sierpc to Casarano | 891.81 mi (1,435.22 km) |
| Sierpc to Casatenovo | 680.01 mi (1,094.37 km) |
| Sierpc to Casciana Terme | 767.69 mi (1,235.47 km) |
| Sierpc to Cascina | 760.10 mi (1,223.26 km) |
| Sierpc to Caselle Torinese | 759.70 mi (1,222.62 km) |
| Sierpc to Caserta | 853.69 mi (1,373.88 km) |
| Sierpc to Casier | 599.38 mi (964.61 km) |
| Sierpc to Casorate Primo | 709.49 mi (1,141.81 km) |
| Sierpc to Casoria | 865.26 mi (1,392.50 km) |
| Sierpc to Cassano al Ionio | 918.86 mi (1,478.76 km) |
| Sierpc to Cassano d'Adda | 682.68 mi (1,098.66 km) |
| Sierpc to Cassano delle Murge | 840.17 mi (1,352.13 km) |
