| Oak Park to Cascais | 3,985.78 mi (6,414.49 km) |
| Oak Park to Castelo Branco | 4,035.11 mi (6,493.87 km) |
| Oak Park to Castro Daire | 3,977.80 mi (6,401.65 km) |
| Oak Park to Celorico de Basto | 3,958.29 mi (6,370.25 km) |
| Oak Park to Chamusca | 4,006.30 mi (6,447.52 km) |
| Oak Park to Chaves | 3,969.94 mi (6,389.00 km) |
| Oak Park to Cinfaes | 3,961.90 mi (6,376.07 km) |
| Oak Park to Coimbra | 3,978.90 mi (6,403.42 km) |
| Oak Park to Condeixa-a-Nova | 3,978.92 mi (6,403.45 km) |
| Oak Park to Corroios | 4,001.13 mi (6,439.20 km) |
| Oak Park to Coruche | 4,018.06 mi (6,466.44 km) |
| Oak Park to Costa de Caparica | 3,996.14 mi (6,431.17 km) |
| Oak Park to Covilha | 4,018.80 mi (6,467.63 km) |
| Oak Park to Eiras | 3,978.07 mi (6,402.09 km) |
| Oak Park to Elvas | 4,084.80 mi (6,573.86 km) |
