| Willimantic to Clarksdale (Mississippi) | 1,123.91 mi (1,808.76 km) |
| Willimantic to Clarkston (Georgia) | 852.94 mi (1,372.68 km) |
| Willimantic to Clarksville (Indiana) | 753.70 mi (1,212.97 km) |
| Willimantic to Clarksville (Tennessee) | 883.74 mi (1,422.24 km) |
| Willimantic to Clawson (Michigan) | 563.01 mi (906.08 km) |
| Willimantic to Clay (Alabama) | 960.50 mi (1,545.78 km) |
| Willimantic to Clayton (California) | 2,614.32 mi (4,207.34 km) |
| Willimantic to Clayton (Missouri) | 977.76 mi (1,573.56 km) |
| Willimantic to Clayton (North Carolina) | 536.70 mi (863.74 km) |
| Willimantic to Clayton (Ohio) | 646.02 mi (1,039.67 km) |
| Willimantic to Clearfield (Utah) | 2,044.86 mi (3,290.89 km) |
| Willimantic to Clearlake (California) | 2,624.18 mi (4,223.21 km) |
| Willimantic to Clearwater (Florida) | 1,119.99 mi (1,802.44 km) |
| Willimantic to Cleburne (Texas) | 1,525.61 mi (2,455.23 km) |
| Willimantic to Clemmons (North Carolina) | 589.12 mi (948.09 km) |
