| Sumter to Cloverleaf (Texas) | 912.44 mi (1,468.43 km) |
| Sumter to Cloverly (Maryland) | 403.61 mi (649.54 km) |
| Sumter to Clovis (California) | 2,206.73 mi (3,551.39 km) |
| Sumter to Clovis (New Mexico) | 1,300.77 mi (2,093.38 km) |
| Sumter to Clute (Texas) | 945.87 mi (1,522.22 km) |
| Sumter to Coachella (California) | 2,041.74 mi (3,285.86 km) |
| Sumter to Coalinga (California) | 2,248.17 mi (3,618.08 km) |
| Sumter to Coamo (Puerto Rico) | 1,396.81 mi (2,247.95 km) |
| Sumter to Coatesville (Pennsylvania) | 487.91 mi (785.21 km) |
| Sumter to Cockeysville (Maryland) | 435.83 mi (701.39 km) |
| Sumter to Cocoa (Florida) | 384.60 mi (618.96 km) |
| Sumter to Cocoa Beach (Florida) | 387.62 mi (623.81 km) |
| Sumter to Coconut Creek (Florida) | 529.33 mi (851.87 km) |
| Sumter to Coeur d'Alene (Idaho) | 2,101.73 mi (3,382.42 km) |
| Sumter to Cohoes (New York) | 709.19 mi (1,141.32 km) |
