| Lake Oswego to Cocentaina | 5,608.38 mi (9,025.81 km) |
| Lake Oswego to Coin | 5,576.79 mi (8,974.97 km) |
| Lake Oswego to Colindres | 5,258.72 mi (8,463.09 km) |
| Lake Oswego to Collado-Villalba | 5,388.85 mi (8,672.52 km) |
| Lake Oswego to Colmenar Viejo | 5,395.47 mi (8,683.17 km) |
| Lake Oswego to Colmenarejo | 5,392.46 mi (8,678.33 km) |
| Lake Oswego to Conil de la Frontera | 5,551.33 mi (8,934.01 km) |
| Lake Oswego to Consuegra | 5,465.23 mi (8,795.43 km) |
| Lake Oswego to Corbera de Llobregat | 5,534.25 mi (8,906.52 km) |
| Lake Oswego to Cordoba | 5,510.37 mi (8,868.08 km) |
| Lake Oswego to Coria del Rio | 5,498.38 mi (8,848.78 km) |
| Lake Oswego to Crevillente | 5,623.78 mi (9,050.61 km) |
| Lake Oswego to Cuarte de Huerva | 5,436.97 mi (8,749.96 km) |
| Lake Oswego to Cubellas | 5,537.97 mi (8,912.49 km) |
| Lake Oswego to Cuellar | 5,337.68 mi (8,590.16 km) |
