| Sintra to Cividale del Friuli | 1,262.35 mi (2,031.56 km) |
| Sintra to Civita Castellana | 1,166.24 mi (1,876.88 km) |
| Sintra to Civitanova Marche | 1,239.84 mi (1,995.32 km) |
| Sintra to Civitavecchia | 1,134.03 mi (1,825.05 km) |
| Sintra to Civitella in Val di Chiana | 1,140.57 mi (1,835.57 km) |
| Sintra to Clusone | 1,098.36 mi (1,767.63 km) |
| Sintra to Coccaglio | 1,092.44 mi (1,758.11 km) |
| Sintra to Codigoro | 1,178.91 mi (1,897.27 km) |
| Sintra to Codogno | 1,071.22 mi (1,723.96 km) |
| Sintra to Codroipo | 1,238.82 mi (1,993.69 km) |
| Sintra to Cogoleto | 1,006.03 mi (1,619.05 km) |
| Sintra to Colle di Val d'Elsa | 1,111.49 mi (1,788.76 km) |
| Sintra to Colle Salvetti | 1,081.91 mi (1,741.17 km) |
| Sintra to Collecchio | 1,087.20 mi (1,749.68 km) |
| Sintra to Colleferro | 1,194.97 mi (1,923.12 km) |
