| Sumner to Casamassima | 5,849.72 mi (9,414.22 km) |
| Sumner to Casandrino | 5,786.95 mi (9,313.19 km) |
| Sumner to Casapulla | 5,779.63 mi (9,301.42 km) |
| Sumner to Casarano | 5,936.53 mi (9,553.93 km) |
| Sumner to Casatenovo | 5,378.17 mi (8,655.32 km) |
| Sumner to Casciana Terme | 5,539.87 mi (8,915.56 km) |
| Sumner to Cascina | 5,528.87 mi (8,897.86 km) |
| Sumner to Caselle Torinese | 5,366.22 mi (8,636.10 km) |
| Sumner to Caserta | 5,780.86 mi (9,303.39 km) |
| Sumner to Casier | 5,454.15 mi (8,777.61 km) |
| Sumner to Casorate Primo | 5,393.23 mi (8,679.57 km) |
| Sumner to Casoria | 5,790.21 mi (9,318.44 km) |
| Sumner to Cassano al Ionio | 5,907.60 mi (9,507.36 km) |
| Sumner to Cassano d'Adda | 5,393.05 mi (8,679.28 km) |
| Sumner to Cassano delle Murge | 5,850.34 mi (9,415.22 km) |
