| Sumter to Johnstown (Pennsylvania) | 448.67 mi (722.06 km) |
| Sumter to Joliet (Illinois) | 673.13 mi (1,083.30 km) |
| Sumter to Jonesboro (Arkansas) | 597.03 mi (960.83 km) |
| Sumter to Joplin (Missouri) | 821.71 mi (1,322.41 km) |
| Sumter to Joppatowne (Maryland) | 439.71 mi (707.65 km) |
| Sumter to Juana Díaz (Puerto Rico) | 1,392.76 mi (2,241.44 km) |
| Sumter to Junction City (Kansas) | 977.76 mi (1,573.56 km) |
| Sumter to Juneau (Alaska) | 2,965.67 mi (4,772.79 km) |
| Sumter to Jupiter (Florida) | 485.27 mi (780.96 km) |
| Sumter to Jupiter Farms (Florida) | 484.94 mi (780.43 km) |
| Sumter to Jurupa Valley (California) | 2,112.70 mi (3,400.06 km) |
| Sumter to Justice (Illinois) | 674.73 mi (1,085.87 km) |
| Sumter to Kahului (Hawaii) | 4,651.45 mi (7,485.78 km) |
| Sumter to Kailua (Hawaii) | 4,705.82 mi (7,573.28 km) |
| Sumter to Kalamazoo (Michigan) | 641.14 mi (1,031.82 km) |
