| Boppard to Cookeville (Tennessee) | 4,478.69 mi (7,207.75 km) |
| Boppard to Coolidge (Arizona) | 5,595.58 mi (9,005.22 km) |
| Boppard to Coon Rapids (Minnesota) | 4,326.59 mi (6,962.98 km) |
| Boppard to Cooper City (Florida) | 4,765.62 mi (7,669.53 km) |
| Boppard to Coos Bay (Oregon) | 5,348.93 mi (8,608.27 km) |
| Boppard to Copiague (New York) | 3,783.71 mi (6,089.30 km) |
| Boppard to Coppell (Texas) | 5,082.11 mi (8,178.87 km) |
| Boppard to Copperas Cove (Texas) | 5,214.61 mi (8,392.11 km) |
| Boppard to Coral Gables (Florida) | 4,782.26 mi (7,696.30 km) |
| Boppard to Coral Springs (Florida) | 4,753.21 mi (7,649.55 km) |
| Boppard to Coral Terrace (Florida) | 4,781.53 mi (7,695.13 km) |
| Boppard to Coralville (Iowa) | 4,436.59 mi (7,140.01 km) |
| Boppard to Coram (New York) | 3,758.86 mi (6,049.30 km) |
| Boppard to Corcoran (California) | 5,660.38 mi (9,109.50 km) |
| Boppard to Cordele (Georgia) | 4,615.47 mi (7,427.88 km) |
