| Sierre to Caguas (Puerto Rico) | 4,538.32 mi (7,303.73 km) |
| Sierre to Cahokia (Illinois) | 4,682.98 mi (7,536.53 km) |
| Sierre to Calabasas (California) | 5,949.13 mi (9,574.20 km) |
| Sierre to Caldwell (Idaho) | 5,348.28 mi (8,607.22 km) |
| Sierre to Caledonia (Wisconsin) | 4,399.74 mi (7,080.71 km) |
| Sierre to Calera (Alabama) | 4,794.75 mi (7,716.40 km) |
| Sierre to Calexico (California) | 5,927.24 mi (9,538.97 km) |
| Sierre to Calhoun (Georgia) | 4,654.55 mi (7,490.78 km) |
| Sierre to California (Maryland) | 4,125.18 mi (6,638.83 km) |
| Sierre to California City (California) | 5,865.37 mi (9,439.39 km) |
| Sierre to Callaway (Florida) | 4,883.92 mi (7,859.91 km) |
| Sierre to Calumet City (Illinois) | 4,439.66 mi (7,144.93 km) |
| Sierre to Calverton (Maryland) | 4,112.93 mi (6,619.11 km) |
| Sierre to Camano (Washington) | 5,247.77 mi (8,445.46 km) |
| Sierre to Camarillo (California) | 5,955.80 mi (9,584.93 km) |
