| Douarnenez to Castle Rock (Colorado) | 4,684.50 mi (7,538.98 km) |
| Douarnenez to Castro Valley (California) | 5,383.64 mi (8,664.13 km) |
| Douarnenez to Catalina Foothills (Arizona) | 5,271.65 mi (8,483.90 km) |
| Douarnenez to Cataño (Puerto Rico) | 3,985.19 mi (6,413.54 km) |
| Douarnenez to Cathedral City (California) | 5,399.60 mi (8,689.81 km) |
| Douarnenez to Catonsville (Maryland) | 3,534.13 mi (5,687.64 km) |
| Douarnenez to Cave Spring (Virginia) | 3,760.29 mi (6,051.60 km) |
| Douarnenez to Cayce (South Carolina) | 3,946.38 mi (6,351.08 km) |
| Douarnenez to Cayey (Puerto Rico) | 4,002.06 mi (6,440.69 km) |
| Douarnenez to Cedar City (Utah) | 5,074.73 mi (8,167.00 km) |
| Douarnenez to Cedar Falls (Iowa) | 4,057.73 mi (6,530.29 km) |
| Douarnenez to Cedar Hill (Texas) | 4,696.91 mi (7,558.95 km) |
| Douarnenez to Cedar Lake (Indiana) | 3,903.42 mi (6,281.95 km) |
| Douarnenez to Cedar Mill (Oregon) | 4,978.51 mi (8,012.14 km) |
| Douarnenez to Cedar Park (Texas) | 4,833.19 mi (7,778.26 km) |
