| Sumter to Cibolo (Texas) | 1,088.01 mi (1,750.99 km) |
| Sumter to Cicero (Illinois) | 677.39 mi (1,090.16 km) |
| Sumter to Cimarron Hills (Colorado) | 1,389.29 mi (2,235.85 km) |
| Sumter to Cincinnati (Ohio) | 425.70 mi (685.09 km) |
| Sumter to Cinco Ranch (Texas) | 946.42 mi (1,523.12 km) |
| Sumter to Circleville (Ohio) | 415.98 mi (669.46 km) |
| Sumter to Citrus (California) | 2,134.81 mi (3,435.64 km) |
| Sumter to Citrus Heights (California) | 2,281.28 mi (3,671.36 km) |
| Sumter to Citrus Park (Florida) | 425.16 mi (684.23 km) |
| Sumter to Claiborne (Louisiana) | 688.65 mi (1,108.27 km) |
| Sumter to Claremont (California) | 2,124.91 mi (3,419.71 km) |
| Sumter to Claremont (New Hampshire) | 782.92 mi (1,259.98 km) |
| Sumter to Claremore (Oklahoma) | 874.43 mi (1,407.26 km) |
| Sumter to Clarksburg (Maryland) | 404.23 mi (650.55 km) |
| Sumter to Clarksburg (West Virginia) | 369.46 mi (594.59 km) |
