| Lake Oswego to Cascais | 5,304.83 mi (8,537.30 km) |
| Lake Oswego to Castelo Branco | 5,314.08 mi (8,552.19 km) |
| Lake Oswego to Castro Daire | 5,242.57 mi (8,437.10 km) |
| Lake Oswego to Celorico de Basto | 5,215.14 mi (8,392.96 km) |
| Lake Oswego to Chamusca | 5,304.16 mi (8,536.22 km) |
| Lake Oswego to Chaves | 5,214.51 mi (8,391.94 km) |
| Lake Oswego to Cinfaes | 5,225.30 mi (8,409.31 km) |
| Lake Oswego to Coimbra | 5,261.27 mi (8,467.19 km) |
| Lake Oswego to Condeixa-a-Nova | 5,263.71 mi (8,471.12 km) |
| Lake Oswego to Corroios | 5,318.74 mi (8,559.68 km) |
| Lake Oswego to Coruche | 5,323.09 mi (8,566.69 km) |
| Lake Oswego to Costa de Caparica | 5,314.16 mi (8,552.32 km) |
| Lake Oswego to Covilha | 5,289.66 mi (8,512.88 km) |
| Lake Oswego to Eiras | 5,259.84 mi (8,464.89 km) |
| Lake Oswego to Elvas | 5,376.12 mi (8,652.03 km) |
