| Opmeer to Carlsbad (New Mexico) | 5,185.03 mi (8,344.50 km) |
| Opmeer to Carmel (Indiana) | 4,136.16 mi (6,656.50 km) |
| Opmeer to Carmichael (California) | 5,354.35 mi (8,616.99 km) |
| Opmeer to Carney (Maryland) | 3,796.21 mi (6,109.40 km) |
| Opmeer to Carnot-Moon (Pennsylvania) | 3,886.25 mi (6,254.32 km) |
| Opmeer to Carol Stream (Illinois) | 4,112.62 mi (6,618.62 km) |
| Opmeer to Carolina (Puerto Rico) | 4,419.06 mi (7,111.79 km) |
| Opmeer to Carolina Forest (South Carolina) | 4,163.99 mi (6,701.29 km) |
| Opmeer to Carpentersville (Illinois) | 4,108.29 mi (6,611.65 km) |
| Opmeer to Carpinteria (California) | 5,556.48 mi (8,942.28 km) |
| Opmeer to Carrboro (North Carolina) | 4,064.17 mi (6,540.65 km) |
| Opmeer to Carroll (Iowa) | 4,342.54 mi (6,988.64 km) |
| Opmeer to Carrollton (Georgia) | 4,416.12 mi (7,107.05 km) |
| Opmeer to Carrollton (Texas) | 4,892.33 mi (7,873.44 km) |
| Opmeer to Carrollwood (Florida) | 4,598.74 mi (7,400.96 km) |
