| Lake Oswego to Cibolo (Texas) | 1,720.33 mi (2,768.61 km) |
| Lake Oswego to Cicero (Illinois) | 1,750.73 mi (2,817.53 km) |
| Lake Oswego to Cimarron Hills (Colorado) | 1,024.34 mi (1,648.52 km) |
| Lake Oswego to Cincinnati (Ohio) | 1,980.42 mi (3,187.18 km) |
| Lake Oswego to Cinco Ranch (Texas) | 1,815.49 mi (2,921.74 km) |
| Lake Oswego to Circleville (Ohio) | 2,043.15 mi (3,288.14 km) |
| Lake Oswego to Citrus (California) | 820.90 mi (1,321.11 km) |
| Lake Oswego to Citrus Heights (California) | 469.78 mi (756.03 km) |
| Lake Oswego to Citrus Park (Florida) | 2,489.61 mi (4,006.63 km) |
| Lake Oswego to Claiborne (Louisiana) | 1,848.43 mi (2,974.76 km) |
| Lake Oswego to Claremont (California) | 823.13 mi (1,324.70 km) |
| Lake Oswego to Claremont (New Hampshire) | 2,449.35 mi (3,941.84 km) |
| Lake Oswego to Claremore (Oklahoma) | 1,539.23 mi (2,477.15 km) |
| Lake Oswego to Clarksburg (Maryland) | 2,328.36 mi (3,747.13 km) |
| Lake Oswego to Clarksburg (West Virginia) | 2,178.81 mi (3,506.46 km) |
