| Willimantic to Carrollwood (Florida) | 1,107.89 mi (1,782.98 km) |
| Willimantic to Carson (California) | 2,541.54 mi (4,090.21 km) |
| Willimantic to Carson City (Nevada) | 2,474.36 mi (3,982.10 km) |
| Willimantic to Carteret (New Jersey) | 130.88 mi (210.63 km) |
| Willimantic to Cartersville (Georgia) | 860.39 mi (1,384.67 km) |
| Willimantic to Carthage (Missouri) | 1,217.62 mi (1,959.58 km) |
| Willimantic to Cary (Illinois) | 823.44 mi (1,325.20 km) |
| Willimantic to Cary (North Carolina) | 542.74 mi (873.46 km) |
| Willimantic to Casa de Oro-Mount Helix (California) | 2,508.63 mi (4,037.26 km) |
| Willimantic to Casa Grande (Arizona) | 2,235.66 mi (3,597.95 km) |
| Willimantic to Casas Adobes (Arizona) | 2,215.18 mi (3,564.99 km) |
| Willimantic to Cascades (Virginia) | 328.94 mi (529.37 km) |
| Willimantic to Casper (Wyoming) | 1,733.46 mi (2,789.74 km) |
| Willimantic to Casselberry (Florida) | 1,036.91 mi (1,668.74 km) |
| Willimantic to Castaic (California) | 2,541.49 mi (4,090.13 km) |
