| Sumter to Cadillac (Michigan) | 761.19 mi (1,225.02 km) |
| Sumter to Caguas (Puerto Rico) | 1,400.67 mi (2,254.15 km) |
| Sumter to Cahokia (Illinois) | 631.51 mi (1,016.32 km) |
| Sumter to Calabasas (California) | 2,178.38 mi (3,505.77 km) |
| Sumter to Caldwell (Idaho) | 2,046.05 mi (3,292.80 km) |
| Sumter to Caledonia (Wisconsin) | 733.48 mi (1,180.42 km) |
| Sumter to Calera (Alabama) | 370.07 mi (595.56 km) |
| Sumter to Calexico (California) | 2,018.75 mi (3,248.86 km) |
| Sumter to Calhoun (Georgia) | 262.47 mi (422.41 km) |
| Sumter to California (Maryland) | 371.38 mi (597.68 km) |
| Sumter to California City (California) | 2,121.88 mi (3,414.83 km) |
| Sumter to Callaway (Florida) | 400.59 mi (644.69 km) |
| Sumter to Calumet City (Illinois) | 658.20 mi (1,059.27 km) |
| Sumter to Calverton (Maryland) | 402.00 mi (646.95 km) |
| Sumter to Camano (Washington) | 2,365.90 mi (3,807.55 km) |
