| Duncan to Casamassima | 5,780.97 mi (9,303.57 km) |
| Duncan to Casandrino | 5,675.78 mi (9,134.29 km) |
| Duncan to Casapulla | 5,671.24 mi (9,126.97 km) |
| Duncan to Casarano | 5,872.91 mi (9,451.53 km) |
| Duncan to Casatenovo | 5,277.94 mi (8,494.02 km) |
| Duncan to Casciana Terme | 5,418.89 mi (8,720.87 km) |
| Duncan to Cascina | 5,409.66 mi (8,706.01 km) |
| Duncan to Caselle Torinese | 5,233.10 mi (8,421.86 km) |
| Duncan to Caserta | 5,673.24 mi (9,130.20 km) |
| Duncan to Casier | 5,395.33 mi (8,682.94 km) |
| Duncan to Casorate Primo | 5,281.83 mi (8,500.28 km) |
| Duncan to Casoria | 5,679.26 mi (9,139.88 km) |
| Duncan to Cassano al Ionio | 5,810.15 mi (9,350.54 km) |
| Duncan to Cassano d'Adda | 5,292.66 mi (8,517.71 km) |
| Duncan to Cassano delle Murge | 5,778.11 mi (9,298.97 km) |
