| Opmeer to Castle Rock (Colorado) | 4,819.94 mi (7,756.94 km) |
| Opmeer to Castro Valley (California) | 5,429.57 mi (8,738.04 km) |
| Opmeer to Catalina Foothills (Arizona) | 5,413.50 mi (8,712.19 km) |
| Opmeer to Cataño (Puerto Rico) | 4,424.24 mi (7,120.13 km) |
| Opmeer to Cathedral City (California) | 5,499.59 mi (8,850.74 km) |
| Opmeer to Catonsville (Maryland) | 3,811.38 mi (6,133.82 km) |
| Opmeer to Cave Spring (Virginia) | 4,036.67 mi (6,496.39 km) |
| Opmeer to Cayce (South Carolina) | 4,239.45 mi (6,822.74 km) |
| Opmeer to Cayey (Puerto Rico) | 4,442.21 mi (7,149.05 km) |
| Opmeer to Cedar City (Utah) | 5,173.94 mi (8,326.65 km) |
| Opmeer to Cedar Falls (Iowa) | 4,236.16 mi (6,817.43 km) |
| Opmeer to Cedar Hill (Texas) | 4,916.44 mi (7,912.25 km) |
| Opmeer to Cedar Lake (Indiana) | 4,114.52 mi (6,621.68 km) |
| Opmeer to Cedar Mill (Oregon) | 4,979.60 mi (8,013.90 km) |
| Opmeer to Cedar Park (Texas) | 5,059.99 mi (8,143.26 km) |
