| Opmeer to Carson (California) | 5,553.00 mi (8,936.69 km) |
| Opmeer to Carson City (Nevada) | 5,280.41 mi (8,498.00 km) |
| Opmeer to Carteret (New Jersey) | 3,651.50 mi (5,876.52 km) |
| Opmeer to Cartersville (Georgia) | 4,375.49 mi (7,041.67 km) |
| Opmeer to Carthage (Missouri) | 4,578.21 mi (7,367.92 km) |
| Opmeer to Cary (Illinois) | 4,102.41 mi (6,602.18 km) |
| Opmeer to Cary (North Carolina) | 4,060.65 mi (6,534.98 km) |
| Opmeer to Casa de Oro-Mount Helix (California) | 5,577.97 mi (8,976.87 km) |
| Opmeer to Casa Grande (Arizona) | 5,407.26 mi (8,702.14 km) |
| Opmeer to Casas Adobes (Arizona) | 5,415.48 mi (8,715.37 km) |
| Opmeer to Cascades (Virginia) | 3,846.89 mi (6,190.97 km) |
| Opmeer to Casper (Wyoming) | 4,676.52 mi (7,526.13 km) |
| Opmeer to Casselberry (Florida) | 4,519.39 mi (7,273.25 km) |
| Opmeer to Castaic (California) | 5,525.82 mi (8,892.95 km) |
| Opmeer to Castle Pines (Colorado) | 4,815.76 mi (7,750.22 km) |
