| Fort Oglethorpe to Cascais | 4,078.29 mi (6,563.38 km) |
| Fort Oglethorpe to Castelo Branco | 4,144.18 mi (6,669.42 km) |
| Fort Oglethorpe to Castro Daire | 4,095.11 mi (6,590.44 km) |
| Fort Oglethorpe to Celorico de Basto | 4,079.72 mi (6,565.68 km) |
| Fort Oglethorpe to Chamusca | 4,107.87 mi (6,610.98 km) |
| Fort Oglethorpe to Chaves | 4,096.26 mi (6,592.30 km) |
| Fort Oglethorpe to Cinfaes | 4,080.36 mi (6,566.70 km) |
| Fort Oglethorpe to Coimbra | 4,088.39 mi (6,579.63 km) |
| Fort Oglethorpe to Condeixa-a-Nova | 4,087.32 mi (6,577.91 km) |
| Fort Oglethorpe to Corroios | 4,093.80 mi (6,588.34 km) |
| Fort Oglethorpe to Coruche | 4,115.96 mi (6,624.00 km) |
| Fort Oglethorpe to Costa de Caparica | 4,088.78 mi (6,580.26 km) |
| Fort Oglethorpe to Covilha | 4,132.02 mi (6,649.85 km) |
| Fort Oglethorpe to Eiras | 4,087.86 mi (6,578.77 km) |
| Fort Oglethorpe to Elvas | 4,186.69 mi (6,737.83 km) |
