| Boppard to Cicero (Illinois) | 4,288.90 mi (6,902.31 km) |
| Boppard to Cimarron Hills (Colorado) | 5,039.89 mi (8,110.92 km) |
| Boppard to Cincinnati (Ohio) | 4,294.70 mi (6,911.65 km) |
| Boppard to Cinco Ranch (Texas) | 5,205.73 mi (8,377.82 km) |
| Boppard to Circleville (Ohio) | 4,211.56 mi (6,777.85 km) |
| Boppard to Citrus (California) | 5,727.38 mi (9,217.33 km) |
| Boppard to Citrus Heights (California) | 5,553.57 mi (8,937.61 km) |
| Boppard to Citrus Park (Florida) | 4,759.65 mi (7,659.92 km) |
| Boppard to Claiborne (Louisiana) | 4,921.69 mi (7,920.70 km) |
| Boppard to Claremont (California) | 5,721.58 mi (9,207.99 km) |
| Boppard to Claremont (New Hampshire) | 3,625.06 mi (5,833.98 km) |
| Boppard to Claremore (Oklahoma) | 4,855.58 mi (7,814.30 km) |
| Boppard to Clarksburg (Maryland) | 4,004.80 mi (6,445.10 km) |
| Boppard to Clarksburg (West Virginia) | 4,124.00 mi (6,636.94 km) |
| Boppard to Clarksdale (Mississippi) | 4,773.83 mi (7,682.74 km) |
