| Oakton to Cascais | 3,564.83 mi (5,737.04 km) |
| Oakton to Castelo Branco | 3,629.04 mi (5,840.38 km) |
| Oakton to Castro Daire | 3,579.29 mi (5,760.32 km) |
| Oakton to Celorico de Basto | 3,563.64 mi (5,735.13 km) |
| Oakton to Chamusca | 3,593.41 mi (5,783.04 km) |
| Oakton to Chaves | 3,579.94 mi (5,761.35 km) |
| Oakton to Cinfaes | 3,564.46 mi (5,736.44 km) |
| Oakton to Coimbra | 3,573.17 mi (5,750.45 km) |
| Oakton to Condeixa-a-Nova | 3,572.19 mi (5,748.88 km) |
| Oakton to Corroios | 3,580.34 mi (5,762.00 km) |
| Oakton to Coruche | 3,601.91 mi (5,796.71 km) |
| Oakton to Costa de Caparica | 3,575.32 mi (5,753.92 km) |
| Oakton to Covilha | 3,616.53 mi (5,820.24 km) |
| Oakton to Eiras | 3,572.61 mi (5,749.55 km) |
| Oakton to Elvas | 3,672.28 mi (5,909.96 km) |
