| Willimantic to Cividale del Friuli | 4,059.11 mi (6,532.51 km) |
| Willimantic to Civita Castellana | 4,147.52 mi (6,674.79 km) |
| Willimantic to Civitanova Marche | 4,169.34 mi (6,709.90 km) |
| Willimantic to Civitavecchia | 4,127.66 mi (6,642.82 km) |
| Willimantic to Civitella in Val di Chiana | 4,077.99 mi (6,562.89 km) |
| Willimantic to Clusone | 3,919.54 mi (6,307.89 km) |
| Willimantic to Coccaglio | 3,931.10 mi (6,326.49 km) |
| Willimantic to Codigoro | 4,046.63 mi (6,512.42 km) |
| Willimantic to Codogno | 3,932.50 mi (6,328.75 km) |
| Willimantic to Codroipo | 4,044.80 mi (6,509.47 km) |
| Willimantic to Cogoleto | 3,911.73 mi (6,295.33 km) |
| Willimantic to Colle di Val d'Elsa | 4,053.18 mi (6,522.96 km) |
| Willimantic to Colle Salvetti | 4,018.02 mi (6,466.38 km) |
| Willimantic to Collecchio | 3,967.97 mi (6,385.83 km) |
| Willimantic to Colleferro | 4,194.30 mi (6,750.08 km) |
