| Hartford to Cividale del Friuli | 4,076.78 mi (6,560.94 km) |
| Hartford to Civita Castellana | 4,166.40 mi (6,705.17 km) |
| Hartford to Civitanova Marche | 4,187.78 mi (6,739.58 km) |
| Hartford to Civitavecchia | 4,146.66 mi (6,673.40 km) |
| Hartford to Civitella in Val di Chiana | 4,096.64 mi (6,592.91 km) |
| Hartford to Clusone | 3,937.68 mi (6,337.08 km) |
| Hartford to Coccaglio | 3,949.33 mi (6,355.83 km) |
| Hartford to Codigoro | 4,064.83 mi (6,541.71 km) |
| Hartford to Codogno | 3,950.88 mi (6,358.33 km) |
| Hartford to Codroipo | 4,062.56 mi (6,538.05 km) |
| Hartford to Cogoleto | 3,930.46 mi (6,325.47 km) |
| Hartford to Colle di Val d'Elsa | 4,071.90 mi (6,553.09 km) |
| Hartford to Colle Salvetti | 4,036.77 mi (6,496.55 km) |
| Hartford to Collecchio | 3,986.42 mi (6,415.52 km) |
| Hartford to Colleferro | 4,213.26 mi (6,780.59 km) |
