| Boulder City to Casamassima | 6,316.09 mi (10,164.76 km) |
| Boulder City to Casandrino | 6,231.21 mi (10,028.17 km) |
| Boulder City to Casapulla | 6,225.13 mi (10,018.39 km) |
| Boulder City to Casarano | 6,407.06 mi (10,311.17 km) |
| Boulder City to Casatenovo | 5,819.87 mi (9,366.17 km) |
| Boulder City to Casciana Terme | 5,974.46 mi (9,614.97 km) |
| Boulder City to Cascina | 5,964.13 mi (9,598.34 km) |
| Boulder City to Caselle Torinese | 5,791.30 mi (9,320.20 km) |
| Boulder City to Caserta | 6,226.77 mi (10,021.02 km) |
| Boulder City to Casier | 5,917.67 mi (9,523.57 km) |
| Boulder City to Casorate Primo | 5,829.69 mi (9,381.98 km) |
| Boulder City to Casoria | 6,234.64 mi (10,033.69 km) |
| Boulder City to Cassano al Ionio | 6,360.98 mi (10,237.00 km) |
| Boulder City to Cassano d'Adda | 5,834.97 mi (9,390.47 km) |
| Boulder City to Cassano delle Murge | 6,315.02 mi (10,163.05 km) |
