| Lake Oswego to Castrovillari | 6,021.52 mi (9,690.69 km) |
| Lake Oswego to Catania | 6,135.12 mi (9,873.51 km) |
| Lake Oswego to Catanzaro | 6,087.58 mi (9,797.02 km) |
| Lake Oswego to Cattolica | 5,684.47 mi (9,148.27 km) |
| Lake Oswego to Cava de' Tirreni | 5,930.51 mi (9,544.24 km) |
| Lake Oswego to Cavallino | 6,038.58 mi (9,718.16 km) |
| Lake Oswego to Cavarzere | 5,598.41 mi (9,009.78 km) |
| Lake Oswego to Cave | 5,818.54 mi (9,364.04 km) |
| Lake Oswego to Cavriago | 5,585.63 mi (8,989.20 km) |
| Lake Oswego to Cavriglia | 5,679.99 mi (9,141.06 km) |
| Lake Oswego to Cazzago San Martino | 5,520.75 mi (8,884.78 km) |
| Lake Oswego to Ceccano | 5,843.73 mi (9,404.57 km) |
| Lake Oswego to Cecina | 5,667.00 mi (9,120.15 km) |
| Lake Oswego to Cefalu | 6,074.77 mi (9,776.40 km) |
| Lake Oswego to Ceglie Messapico | 6,001.55 mi (9,658.56 km) |
