| Lake Oswego to Carmona | 5,503.17 mi (8,856.50 km) |
| Lake Oswego to Cartagena | 5,653.85 mi (9,098.99 km) |
| Lake Oswego to Cartama | 5,578.54 mi (8,977.79 km) |
| Lake Oswego to Cartaya | 5,459.58 mi (8,786.35 km) |
| Lake Oswego to Caspe | 5,483.92 mi (8,825.51 km) |
| Lake Oswego to Cassa de la Selva | 5,536.11 mi (8,909.50 km) |
| Lake Oswego to Castalla | 5,609.09 mi (9,026.96 km) |
| Lake Oswego to Castellbisbal | 5,532.45 mi (8,903.61 km) |
| Lake Oswego to Castelldefels | 5,543.29 mi (8,921.07 km) |
| Lake Oswego to Castello de Ampurias | 5,521.28 mi (8,885.64 km) |
| Lake Oswego to Castellon de la Plana | 5,553.01 mi (8,936.70 km) |
| Lake Oswego to Castilleja de la Cuesta | 5,493.06 mi (8,840.22 km) |
| Lake Oswego to Catarroja | 5,573.22 mi (8,969.23 km) |
| Lake Oswego to Catral | 5,628.83 mi (9,058.73 km) |
| Lake Oswego to Caudete | 5,592.83 mi (9,000.79 km) |
