| Sumter to Castle Pines (Colorado) | 1,403.72 mi (2,259.07 km) |
| Sumter to Castle Rock (Colorado) | 1,401.99 mi (2,256.28 km) |
| Sumter to Castro Valley (California) | 2,329.72 mi (3,749.32 km) |
| Sumter to Catalina Foothills (Arizona) | 1,761.54 mi (2,834.93 km) |
| Sumter to Cataño (Puerto Rico) | 1,385.14 mi (2,229.17 km) |
| Sumter to Cathedral City (California) | 2,058.03 mi (3,312.08 km) |
| Sumter to Catonsville (Maryland) | 419.89 mi (675.74 km) |
| Sumter to Cave Spring (Virginia) | 228.09 mi (367.07 km) |
| Sumter to Cayce (South Carolina) | 37.25 mi (59.96 km) |
| Sumter to Cayey (Puerto Rico) | 1,402.37 mi (2,256.89 km) |
| Sumter to Cedar City (Utah) | 1,841.10 mi (2,962.96 km) |
| Sumter to Cedar Falls (Iowa) | 881.51 mi (1,418.65 km) |
| Sumter to Cedar Hill (Texas) | 960.64 mi (1,546.01 km) |
| Sumter to Cedar Lake (Indiana) | 641.46 mi (1,032.33 km) |
| Sumter to Cedar Mill (Oregon) | 2,359.72 mi (3,797.60 km) |
