| Guyancourt to Bombarral | 859.78 mi (1,383.68 km) |
| Guyancourt to Bougado | 728.91 mi (1,173.06 km) |
| Guyancourt to Braga | 713.12 mi (1,147.66 km) |
| Guyancourt to Braganca | 644.05 mi (1,036.51 km) |
| Guyancourt to Cabeceiras de Basto | 700.17 mi (1,126.82 km) |
| Guyancourt to Cacem | 892.41 mi (1,436.19 km) |
| Guyancourt to Cadaval | 859.96 mi (1,383.97 km) |
| Guyancourt to Caldas da Rainha | 851.45 mi (1,370.28 km) |
| Guyancourt to Calheta | 1,489.20 mi (2,396.64 km) |
| Guyancourt to Camara de Lobos | 1,484.47 mi (2,389.03 km) |
| Guyancourt to Canico | 1,483.15 mi (2,386.90 km) |
| Guyancourt to Cantanhede | 782.54 mi (1,259.37 km) |
| Guyancourt to Carregal do Sal | 758.61 mi (1,220.86 km) |
| Guyancourt to Cartaxo | 854.68 mi (1,375.47 km) |
| Guyancourt to Cascais | 899.77 mi (1,448.04 km) |
