| Sulphur to Cibolo (Texas) | 294.39 mi (473.77 km) |
| Sulphur to Cicero (Illinois) | 860.84 mi (1,385.38 km) |
| Sulphur to Cimarron Hills (Colorado) | 877.50 mi (1,412.20 km) |
| Sulphur to Cincinnati (Ohio) | 794.15 mi (1,278.05 km) |
| Sulphur to Cinco Ranch (Texas) | 147.79 mi (237.84 km) |
| Sulphur to Circleville (Ohio) | 875.39 mi (1,408.80 km) |
| Sulphur to Citrus (California) | 1,456.00 mi (2,343.20 km) |
| Sulphur to Citrus Heights (California) | 1,687.19 mi (2,715.28 km) |
| Sulphur to Citrus Park (Florida) | 667.84 mi (1,074.78 km) |
| Sulphur to Claiborne (Louisiana) | 173.57 mi (279.33 km) |
| Sulphur to Claremont (California) | 1,446.13 mi (2,327.32 km) |
| Sulphur to Claremont (New Hampshire) | 1,468.46 mi (2,363.25 km) |
| Sulphur to Claremore (Oklahoma) | 440.14 mi (708.33 km) |
| Sulphur to Clarksburg (Maryland) | 1,102.39 mi (1,774.12 km) |
| Sulphur to Clarksburg (West Virginia) | 967.19 mi (1,556.54 km) |
