| Boppard to Carson (California) | 5,754.79 mi (9,261.43 km) |
| Boppard to Carson City (Nevada) | 5,484.14 mi (8,825.87 km) |
| Boppard to Carteret (New Jersey) | 3,821.33 mi (6,149.83 km) |
| Boppard to Cartersville (Georgia) | 4,547.94 mi (7,319.21 km) |
| Boppard to Carthage (Missouri) | 4,765.05 mi (7,668.60 km) |
| Boppard to Cary (Illinois) | 4,289.37 mi (6,903.07 km) |
| Boppard to Cary (North Carolina) | 4,227.79 mi (6,803.97 km) |
| Boppard to Casa de Oro-Mount Helix (California) | 5,778.75 mi (9,300.00 km) |
| Boppard to Casa Grande (Arizona) | 5,605.03 mi (9,020.42 km) |
| Boppard to Casas Adobes (Arizona) | 5,612.43 mi (9,032.33 km) |
| Boppard to Cascades (Virginia) | 4,017.82 mi (6,466.05 km) |
| Boppard to Casper (Wyoming) | 4,876.39 mi (7,847.80 km) |
| Boppard to Casselberry (Florida) | 4,678.17 mi (7,528.79 km) |
| Boppard to Castaic (California) | 5,727.98 mi (9,218.29 km) |
| Boppard to Castle Pines (Colorado) | 5,012.87 mi (8,067.44 km) |
