| Houma to Cividale del Friuli | 5,387.36 mi (8,670.12 km) |
| Houma to Civita Castellana | 5,476.84 mi (8,814.12 km) |
| Houma to Civitanova Marche | 5,498.99 mi (8,849.78 km) |
| Houma to Civitavecchia | 5,456.71 mi (8,781.73 km) |
| Houma to Civitella in Val di Chiana | 5,407.59 mi (8,702.68 km) |
| Houma to Clusone | 5,248.93 mi (8,447.34 km) |
| Houma to Coccaglio | 5,260.61 mi (8,466.14 km) |
| Houma to Codigoro | 5,376.11 mi (8,652.01 km) |
| Houma to Codogno | 5,262.13 mi (8,468.59 km) |
| Houma to Codroipo | 5,373.35 mi (8,647.57 km) |
| Houma to Cogoleto | 5,241.27 mi (8,435.01 km) |
| Houma to Colle di Val d'Elsa | 5,382.71 mi (8,662.64 km) |
| Houma to Colle Salvetti | 5,347.54 mi (8,606.04 km) |
| Houma to Collecchio | 5,297.63 mi (8,525.71 km) |
| Houma to Colleferro | 5,523.47 mi (8,889.16 km) |
