| Oswego to Cascais | 4,017.29 mi (6,465.20 km) |
| Oswego to Castelo Branco | 4,066.62 mi (6,544.59 km) |
| Oswego to Castro Daire | 4,009.30 mi (6,452.35 km) |
| Oswego to Celorico de Basto | 3,989.78 mi (6,420.93 km) |
| Oswego to Chamusca | 4,037.82 mi (6,498.24 km) |
| Oswego to Chaves | 4,001.42 mi (6,439.66 km) |
| Oswego to Cinfaes | 3,993.40 mi (6,426.76 km) |
| Oswego to Coimbra | 4,010.41 mi (6,454.14 km) |
| Oswego to Condeixa-a-Nova | 4,010.43 mi (6,454.16 km) |
| Oswego to Corroios | 4,032.64 mi (6,489.91 km) |
| Oswego to Coruche | 4,049.57 mi (6,517.16 km) |
| Oswego to Costa de Caparica | 4,027.65 mi (6,481.88 km) |
| Oswego to Covilha | 4,050.31 mi (6,518.34 km) |
| Oswego to Eiras | 4,009.58 mi (6,452.80 km) |
| Oswego to Elvas | 4,116.32 mi (6,624.58 km) |
