| Sulphur to Castle Pines (Colorado) | 911.36 mi (1,466.70 km) |
| Sulphur to Castle Rock (Colorado) | 906.78 mi (1,459.32 km) |
| Sulphur to Castro Valley (California) | 1,716.34 mi (2,762.18 km) |
| Sulphur to Catalina Foothills (Arizona) | 1,043.81 mi (1,679.86 km) |
| Sulphur to Cataño (Puerto Rico) | 1,890.07 mi (3,041.77 km) |
| Sulphur to Cathedral City (California) | 1,373.21 mi (2,209.97 km) |
| Sulphur to Catonsville (Maryland) | 1,128.24 mi (1,815.72 km) |
| Sulphur to Cave Spring (Virginia) | 905.34 mi (1,457.00 km) |
| Sulphur to Cayce (South Carolina) | 764.59 mi (1,230.49 km) |
| Sulphur to Cayey (Puerto Rico) | 1,900.46 mi (3,058.50 km) |
| Sulphur to Cedar City (Utah) | 1,239.67 mi (1,995.06 km) |
| Sulphur to Cedar Falls (Iowa) | 850.69 mi (1,369.05 km) |
| Sulphur to Cedar Hill (Texas) | 267.46 mi (430.43 km) |
| Sulphur to Cedar Lake (Indiana) | 837.61 mi (1,348.01 km) |
| Sulphur to Cedar Mill (Oregon) | 1,905.70 mi (3,066.92 km) |
