| Willimantic to Clemson (South Carolina) | 752.28 mi (1,210.68 km) |
| Willimantic to Clermont (Florida) | 1,056.06 mi (1,699.56 km) |
| Willimantic to Cleveland (Mississippi) | 1,148.65 mi (1,848.57 km) |
| Willimantic to Cleveland (Ohio) | 489.31 mi (787.47 km) |
| Willimantic to Cleveland (Tennessee) | 819.10 mi (1,318.21 km) |
| Willimantic to Cleveland Heights (Ohio) | 483.07 mi (777.43 km) |
| Willimantic to Cliffside Park (New Jersey) | 111.06 mi (178.73 km) |
| Willimantic to Clifton (Colorado) | 1,902.00 mi (3,060.98 km) |
| Willimantic to Clifton (New Jersey) | 117.00 mi (188.29 km) |
| Willimantic to Clinton (Iowa) | 927.28 mi (1,492.32 km) |
| Willimantic to Clinton (Maryland) | 321.40 mi (517.25 km) |
| Willimantic to Clinton (Mississippi) | 1,187.10 mi (1,910.46 km) |
| Willimantic to Clinton (Utah) | 2,046.33 mi (3,293.25 km) |
| Willimantic to Clive (Iowa) | 1,111.28 mi (1,788.44 km) |
| Willimantic to Cloquet (Minnesota) | 1,058.54 mi (1,703.55 km) |
