| Boulder City to Carmignano | 5,972.56 mi (9,611.91 km) |
| Boulder City to Carovigno | 6,353.45 mi (10,224.89 km) |
| Boulder City to Carpenedolo | 5,873.24 mi (9,452.06 km) |
| Boulder City to Carpi | 5,917.95 mi (9,524.03 km) |
| Boulder City to Carrara | 5,928.79 mi (9,541.47 km) |
| Boulder City to Carugate | 5,828.14 mi (9,379.49 km) |
| Boulder City to Casal di Principe | 6,222.91 mi (10,014.80 km) |
| Boulder City to Casale Monferrato | 5,820.53 mi (9,367.24 km) |
| Boulder City to Casale sul Sile | 5,921.35 mi (9,529.49 km) |
| Boulder City to Casalecchio di Reno | 5,946.50 mi (9,569.97 km) |
| Boulder City to Casalgrande | 5,923.47 mi (9,532.91 km) |
| Boulder City to Casalmaggiore | 5,892.29 mi (9,482.72 km) |
| Boulder City to Casalnuovo di Napoli | 6,235.39 mi (10,034.88 km) |
| Boulder City to Casalpusterlengo | 5,857.52 mi (9,426.77 km) |
| Boulder City to Casaluce | 6,225.99 mi (10,019.76 km) |
