| Willimantic to Cloverleaf (Texas) | 1,521.16 mi (2,448.07 km) |
| Willimantic to Cloverly (Maryland) | 309.74 mi (498.47 km) |
| Willimantic to Clovis (California) | 2,529.26 mi (4,070.44 km) |
| Willimantic to Clovis (New Mexico) | 1,747.76 mi (2,812.75 km) |
| Willimantic to Clute (Texas) | 1,565.21 mi (2,518.97 km) |
| Willimantic to Coachella (California) | 2,437.14 mi (3,922.20 km) |
| Willimantic to Coalinga (California) | 2,580.66 mi (4,153.16 km) |
| Willimantic to Coamo (Puerto Rico) | 1,669.48 mi (2,686.78 km) |
| Willimantic to Coatesville (Pennsylvania) | 223.34 mi (359.42 km) |
| Willimantic to Cockeysville (Maryland) | 278.51 mi (448.22 km) |
| Willimantic to Cocoa (Florida) | 1,039.41 mi (1,672.76 km) |
| Willimantic to Cocoa Beach (Florida) | 1,038.87 mi (1,671.91 km) |
| Willimantic to Coconut Creek (Florida) | 1,158.91 mi (1,865.08 km) |
| Willimantic to Coeur d'Alene (Idaho) | 2,196.37 mi (3,534.71 km) |
| Willimantic to Cohoes (New York) | 105.74 mi (170.17 km) |
