| Sumter to Cordele (Georgia) | 238.92 mi (384.51 km) |
| Sumter to Corinth (Mississippi) | 467.83 mi (752.90 km) |
| Sumter to Corinth (Texas) | 960.81 mi (1,546.28 km) |
| Sumter to Cornelius (North Carolina) | 109.50 mi (176.23 km) |
| Sumter to Cornelius (Oregon) | 2,371.71 mi (3,816.89 km) |
| Sumter to Corning (New York) | 595.33 mi (958.08 km) |
| Sumter to Corona (California) | 2,119.79 mi (3,411.47 km) |
| Sumter to Coronado (California) | 2,113.66 mi (3,401.61 km) |
| Sumter to Corpus Christi (Texas) | 1,093.43 mi (1,759.71 km) |
| Sumter to Corsicana (Texas) | 939.09 mi (1,511.32 km) |
| Sumter to Cortland (New York) | 640.39 mi (1,030.60 km) |
| Sumter to Corvallis (Oregon) | 2,378.52 mi (3,827.86 km) |
| Sumter to Coshocton (Ohio) | 444.13 mi (714.75 km) |
| Sumter to Costa Mesa (California) | 2,142.01 mi (3,447.23 km) |
| Sumter to Coto de Caza (California) | 2,124.47 mi (3,419.01 km) |
