| Shannon to Cloverly (Maryland) | 3,274.64 mi (5,270.03 km) |
| Shannon to Clovis (California) | 4,993.11 mi (8,035.63 km) |
| Shannon to Clovis (New Mexico) | 4,536.18 mi (7,300.28 km) |
| Shannon to Clute (Texas) | 4,510.75 mi (7,259.35 km) |
| Shannon to Coachella (California) | 5,046.77 mi (8,121.99 km) |
| Shannon to Coalinga (California) | 5,052.38 mi (8,131.02 km) |
| Shannon to Coamo (Puerto Rico) | 3,882.83 mi (6,248.81 km) |
| Shannon to Coatesville (Pennsylvania) | 3,187.51 mi (5,129.80 km) |
| Shannon to Cockeysville (Maryland) | 3,242.87 mi (5,218.89 km) |
| Shannon to Cocoa (Florida) | 3,942.33 mi (6,344.56 km) |
| Shannon to Cocoa Beach (Florida) | 3,938.96 mi (6,339.15 km) |
| Shannon to Coconut Creek (Florida) | 4,024.37 mi (6,476.60 km) |
| Shannon to Coeur d'Alene (Idaho) | 4,312.61 mi (6,940.48 km) |
| Shannon to Cohoes (New York) | 2,982.53 mi (4,799.92 km) |
| Shannon to Cold Springs (Nevada) | 4,843.96 mi (7,795.59 km) |
