| Lake Oswego to Cadiz | 5,529.46 mi (8,898.80 km) |
| Lake Oswego to Calafell | 5,535.31 mi (8,908.22 km) |
| Lake Oswego to Calahorra | 5,364.76 mi (8,633.75 km) |
| Lake Oswego to Calasparra | 5,595.47 mi (9,005.03 km) |
| Lake Oswego to Calatayud | 5,427.06 mi (8,734.01 km) |
| Lake Oswego to Caldas de Montbuy | 5,529.31 mi (8,898.56 km) |
| Lake Oswego to Caldas de Reyes | 5,130.31 mi (8,256.43 km) |
| Lake Oswego to Calella | 5,545.15 mi (8,924.06 km) |
| Lake Oswego to Callosa de Segura | 5,628.42 mi (9,058.06 km) |
| Lake Oswego to Calpe | 5,629.57 mi (9,059.91 km) |
| Lake Oswego to Calvia | 5,655.77 mi (9,102.09 km) |
| Lake Oswego to Camas | 5,492.65 mi (8,839.57 km) |
| Lake Oswego to Cambados | 5,130.12 mi (8,256.13 km) |
| Lake Oswego to Cambre | 5,105.52 mi (8,216.54 km) |
| Lake Oswego to Cambrils | 5,526.98 mi (8,894.81 km) |
