| Boppard to Caño Martin Peña (Puerto Rico) | 4,528.90 mi (7,288.56 km) |
| Boppard to Cañon City (Colorado) | 5,079.89 mi (8,175.29 km) |
| Boppard to Canóvanas (Puerto Rico) | 4,525.43 mi (7,282.97 km) |
| Boppard to Canton (Georgia) | 4,531.42 mi (7,292.61 km) |
| Boppard to Canton (Illinois) | 4,435.51 mi (7,138.27 km) |
| Boppard to Canton (Mississippi) | 4,834.07 mi (7,779.69 km) |
| Boppard to Canton (Ohio) | 4,094.56 mi (6,589.57 km) |
| Boppard to Canyon (Texas) | 5,153.55 mi (8,293.84 km) |
| Boppard to Canyon Lake (California) | 5,733.54 mi (9,227.24 km) |
| Boppard to Canyon Lake (Texas) | 5,294.10 mi (8,520.03 km) |
| Boppard to Cape Coral (Florida) | 4,807.84 mi (7,737.48 km) |
| Boppard to Cape Girardeau (Missouri) | 4,578.20 mi (7,367.90 km) |
| Boppard to Carbondale (Illinois) | 4,544.98 mi (7,314.43 km) |
| Boppard to Carlisle (Pennsylvania) | 3,958.05 mi (6,369.86 km) |
| Boppard to Carlsbad (California) | 5,767.26 mi (9,281.52 km) |
