| Glenn Dale to Cascais | 3,537.63 mi (5,693.26 km) |
| Glenn Dale to Castelo Branco | 3,602.00 mi (5,796.86 km) |
| Glenn Dale to Castro Daire | 3,552.36 mi (5,716.97 km) |
| Glenn Dale to Celorico de Basto | 3,536.77 mi (5,691.88 km) |
| Glenn Dale to Chamusca | 3,566.30 mi (5,739.40 km) |
| Glenn Dale to Chaves | 3,553.13 mi (5,718.21 km) |
| Glenn Dale to Cinfaes | 3,537.54 mi (5,693.13 km) |
| Glenn Dale to Coimbra | 3,546.14 mi (5,706.96 km) |
| Glenn Dale to Condeixa-a-Nova | 3,545.15 mi (5,705.37 km) |
| Glenn Dale to Corroios | 3,553.14 mi (5,718.22 km) |
| Glenn Dale to Coruche | 3,574.75 mi (5,753.01 km) |
| Glenn Dale to Costa de Caparica | 3,548.12 mi (5,710.14 km) |
| Glenn Dale to Covilha | 3,589.54 mi (5,776.81 km) |
| Glenn Dale to Eiras | 3,545.58 mi (5,706.06 km) |
| Glenn Dale to Elvas | 3,645.16 mi (5,866.31 km) |
