| Sem to Cloverly (Maryland) | 3,861.88 mi (6,215.09 km) |
| Sem to Clovis (California) | 5,208.31 mi (8,381.96 km) |
| Sem to Clovis (New Mexico) | 4,937.22 mi (7,945.69 km) |
| Sem to Clute (Texas) | 5,028.59 mi (8,092.74 km) |
| Sem to Coachella (California) | 5,323.22 mi (8,566.89 km) |
| Sem to Coalinga (California) | 5,266.01 mi (8,474.82 km) |
| Sem to Coamo (Puerto Rico) | 4,681.56 mi (7,534.25 km) |
| Sem to Coatesville (Pennsylvania) | 3,775.28 mi (6,075.73 km) |
| Sem to Cockeysville (Maryland) | 3,829.33 mi (6,162.72 km) |
| Sem to Cocoa (Florida) | 4,589.09 mi (7,385.43 km) |
| Sem to Cocoa Beach (Florida) | 4,587.17 mi (7,382.34 km) |
| Sem to Coconut Creek (Florida) | 4,690.11 mi (7,548.00 km) |
| Sem to Coeur d'Alene (Idaho) | 4,465.77 mi (7,186.96 km) |
| Sem to Cohoes (New York) | 3,557.04 mi (5,724.51 km) |
| Sem to Cold Springs (Nevada) | 5,033.89 mi (8,101.27 km) |
