| Hertford to Cividale del Friuli | 726.80 mi (1,169.68 km) |
| Hertford to Civita Castellana | 878.78 mi (1,414.27 km) |
| Hertford to Civitanova Marche | 868.84 mi (1,398.26 km) |
| Hertford to Civitavecchia | 871.08 mi (1,401.87 km) |
| Hertford to Civitella in Val di Chiana | 796.26 mi (1,281.46 km) |
| Hertford to Clusone | 611.27 mi (983.74 km) |
| Hertford to Coccaglio | 628.18 mi (1,010.96 km) |
| Hertford to Codigoro | 736.83 mi (1,185.81 km) |
| Hertford to Codogno | 640.05 mi (1,030.06 km) |
| Hertford to Codroipo | 715.61 mi (1,151.66 km) |
| Hertford to Cogoleto | 650.20 mi (1,046.39 km) |
| Hertford to Colle di Val d'Elsa | 778.89 mi (1,253.50 km) |
| Hertford to Colle Salvetti | 748.08 mi (1,203.92 km) |
| Hertford to Collecchio | 677.84 mi (1,090.87 km) |
| Hertford to Colleferro | 928.59 mi (1,494.42 km) |
