| Markham to Cascais | 3,989.62 mi (6,420.68 km) |
| Markham to Castelo Branco | 4,039.66 mi (6,501.20 km) |
| Markham to Castro Daire | 3,982.67 mi (6,409.49 km) |
| Markham to Celorico de Basto | 3,963.32 mi (6,378.35 km) |
| Markham to Chamusca | 4,010.53 mi (6,454.32 km) |
| Markham to Chaves | 3,975.18 mi (6,397.43 km) |
| Markham to Cinfaes | 3,966.81 mi (6,383.97 km) |
| Markham to Coimbra | 3,983.45 mi (6,410.74 km) |
| Markham to Condeixa-a-Nova | 3,983.42 mi (6,410.69 km) |
| Markham to Corroios | 4,004.99 mi (6,445.41 km) |
| Markham to Coruche | 4,022.14 mi (6,473.01 km) |
| Markham to Costa de Caparica | 3,999.99 mi (6,437.37 km) |
| Markham to Covilha | 4,023.51 mi (6,475.22 km) |
| Markham to Eiras | 3,982.63 mi (6,409.42 km) |
| Markham to Elvas | 4,089.08 mi (6,580.73 km) |
