| Lake Oswego to Cavdir | 6,478.51 mi (10,426.15 km) |
| Lake Oswego to Cay | 6,407.52 mi (10,311.91 km) |
| Lake Oswego to Caybasi | 6,334.87 mi (10,194.99 km) |
| Lake Oswego to Caycuma | 6,237.97 mi (10,039.04 km) |
| Lake Oswego to Cayeli | 6,373.00 mi (10,256.36 km) |
| Lake Oswego to Cayiralan | 6,431.17 mi (10,349.97 km) |
| Lake Oswego to Cayirhan | 6,319.18 mi (10,169.74 km) |
| Lake Oswego to Cayirli | 6,452.35 mi (10,384.05 km) |
| Lake Oswego to Cayirova | 6,233.19 mi (10,031.35 km) |
| Lake Oswego to Caykara | 6,390.93 mi (10,285.21 km) |
| Lake Oswego to Cekerek | 6,377.86 mi (10,264.17 km) |
| Lake Oswego to Cekme | 6,216.09 mi (10,003.83 km) |
| Lake Oswego to Celtik | 6,391.73 mi (10,286.50 km) |
| Lake Oswego to Cerkes | 6,290.93 mi (10,124.27 km) |
| Lake Oswego to Cerkezkoy | 6,179.39 mi (9,944.77 km) |
