| Sumter to Conyers (Georgia) | 207.75 mi (334.35 km) |
| Sumter to Cookeville (Tennessee) | 327.21 mi (526.59 km) |
| Sumter to Coolidge (Arizona) | 1,789.46 mi (2,879.86 km) |
| Sumter to Coon Rapids (Minnesota) | 1,034.75 mi (1,665.26 km) |
| Sumter to Cooper City (Florida) | 545.38 mi (877.71 km) |
| Sumter to Coos Bay (Oregon) | 2,423.53 mi (3,900.29 km) |
| Sumter to Copiague (New York) | 603.17 mi (970.71 km) |
| Sumter to Coppell (Texas) | 958.13 mi (1,541.96 km) |
| Sumter to Copperas Cove (Texas) | 1,037.73 mi (1,670.07 km) |
| Sumter to Coral Gables (Florida) | 569.06 mi (915.82 km) |
| Sumter to Coral Springs (Florida) | 529.94 mi (852.85 km) |
| Sumter to Coral Terrace (Florida) | 566.09 mi (911.04 km) |
| Sumter to Coralville (Iowa) | 811.99 mi (1,306.78 km) |
| Sumter to Coram (New York) | 627.52 mi (1,009.90 km) |
| Sumter to Corcoran (California) | 2,206.55 mi (3,551.10 km) |
