| Boulogne-Billancourt to Castelo Branco | 786.11 mi (1,265.12 km) |
| Boulogne-Billancourt to Castro Daire | 739.54 mi (1,190.18 km) |
| Boulogne-Billancourt to Celorico de Basto | 716.05 mi (1,152.37 km) |
| Boulogne-Billancourt to Chamusca | 842.52 mi (1,355.91 km) |
| Boulogne-Billancourt to Chaves | 679.52 mi (1,093.59 km) |
| Boulogne-Billancourt to Cinfaes | 735.46 mi (1,183.62 km) |
| Boulogne-Billancourt to Coimbra | 793.04 mi (1,276.27 km) |
| Boulogne-Billancourt to Condeixa-a-Nova | 800.48 mi (1,288.25 km) |
| Boulogne-Billancourt to Corroios | 904.70 mi (1,455.97 km) |
| Boulogne-Billancourt to Coruche | 866.12 mi (1,393.88 km) |
| Boulogne-Billancourt to Costa de Caparica | 905.65 mi (1,457.50 km) |
| Boulogne-Billancourt to Covilha | 759.71 mi (1,222.64 km) |
| Boulogne-Billancourt to Eiras | 791.18 mi (1,273.27 km) |
| Boulogne-Billancourt to Elvas | 831.27 mi (1,337.80 km) |
| Boulogne-Billancourt to Entroncamento | 835.57 mi (1,344.72 km) |
