| Sierpc to Carmignano | 740.57 mi (1,191.83 km) |
| Sierpc to Carovigno | 847.00 mi (1,363.11 km) |
| Sierpc to Carpenedolo | 665.35 mi (1,070.77 km) |
| Sierpc to Carpi | 686.52 mi (1,104.85 km) |
| Sierpc to Carrara | 748.29 mi (1,204.25 km) |
| Sierpc to Carugate | 687.31 mi (1,106.11 km) |
| Sierpc to Casal di Principe | 859.79 mi (1,383.70 km) |
| Sierpc to Casale Monferrato | 736.40 mi (1,185.12 km) |
| Sierpc to Casale sul Sile | 601.53 mi (968.07 km) |
| Sierpc to Casalecchio di Reno | 694.02 mi (1,116.92 km) |
| Sierpc to Casalgrande | 702.14 mi (1,129.98 km) |
| Sierpc to Casalmaggiore | 687.38 mi (1,106.24 km) |
| Sierpc to Casalnuovo di Napoli | 863.47 mi (1,389.62 km) |
| Sierpc to Casalpusterlengo | 698.22 mi (1,123.68 km) |
| Sierpc to Casaluce | 859.97 mi (1,383.99 km) |
