| Sumter to Carrollwood (Florida) | 425.32 mi (684.49 km) |
| Sumter to Carson (California) | 2,159.04 mi (3,474.64 km) |
| Sumter to Carson City (Nevada) | 2,196.56 mi (3,535.02 km) |
| Sumter to Carteret (New Jersey) | 570.40 mi (917.98 km) |
| Sumter to Cartersville (Georgia) | 252.79 mi (406.83 km) |
| Sumter to Carthage (Missouri) | 813.04 mi (1,308.46 km) |
| Sumter to Cary (Illinois) | 713.00 mi (1,147.47 km) |
| Sumter to Cary (North Carolina) | 155.45 mi (250.18 km) |
| Sumter to Casa de Oro-Mount Helix (California) | 2,101.31 mi (3,381.73 km) |
| Sumter to Casa Grande (Arizona) | 1,803.34 mi (2,902.20 km) |
| Sumter to Casas Adobes (Arizona) | 1,768.28 mi (2,845.77 km) |
| Sumter to Cascades (Virginia) | 390.31 mi (628.14 km) |
| Sumter to Casper (Wyoming) | 1,524.91 mi (2,454.11 km) |
| Sumter to Casselberry (Florida) | 368.68 mi (593.34 km) |
| Sumter to Castaic (California) | 2,172.01 mi (3,495.51 km) |
