| Guadarrama to Collegno | 663.39 mi (1,067.63 km) |
| Guadarrama to Cologno al Serio | 772.28 mi (1,242.87 km) |
| Guadarrama to Cologno Monzese | 751.91 mi (1,210.08 km) |
| Guadarrama to Colorno | 789.10 mi (1,269.93 km) |
| Guadarrama to Comacchio | 870.24 mi (1,400.52 km) |
| Guadarrama to Comiso | 1,036.33 mi (1,667.80 km) |
| Guadarrama to Como | 750.84 mi (1,208.36 km) |
| Guadarrama to Concordia Sagittaria | 920.35 mi (1,481.16 km) |
| Guadarrama to Concorezzo | 756.07 mi (1,216.77 km) |
| Guadarrama to Conegliano | 897.37 mi (1,444.17 km) |
| Guadarrama to Conselice | 850.65 mi (1,368.99 km) |
| Guadarrama to Conselve | 864.37 mi (1,391.08 km) |
| Guadarrama to Conversano | 1,106.25 mi (1,780.34 km) |
| Guadarrama to Copertino | 1,160.94 mi (1,868.35 km) |
| Guadarrama to Copparo | 856.83 mi (1,378.93 km) |
