| Boppard to Camas (Washington) | 5,171.59 mi (8,322.87 km) |
| Boppard to Cambridge (Maryland) | 3,987.45 mi (6,417.19 km) |
| Boppard to Cambridge (Massachusetts) | 3,618.34 mi (5,823.16 km) |
| Boppard to Camden (Arkansas) | 4,893.65 mi (7,875.57 km) |
| Boppard to Camden (New Jersey) | 3,885.64 mi (6,253.33 km) |
| Boppard to Cameron Park (California) | 5,546.61 mi (8,926.41 km) |
| Boppard to Camp Pendleton South (California) | 5,764.26 mi (9,276.67 km) |
| Boppard to Camp Springs (Maryland) | 4,009.98 mi (6,453.43 km) |
| Boppard to Camp Verde (Arizona) | 5,513.32 mi (8,872.84 km) |
| Boppard to Campbell (California) | 5,656.31 mi (9,102.95 km) |
| Boppard to Campbellsville (Kentucky) | 4,414.10 mi (7,103.81 km) |
| Boppard to Campton Hills (Illinois) | 4,308.17 mi (6,933.32 km) |
| Boppard to Canby (Oregon) | 5,197.86 mi (8,365.14 km) |
| Boppard to Candelaria (Puerto Rico) | 4,537.64 mi (7,302.62 km) |
| Boppard to Candler-McAfee (Georgia) | 4,548.29 mi (7,319.77 km) |
