| Boppard to Ukiah (California) | 5,577.97 mi (8,976.87 km) |
| Boppard to Union (Missouri) | 4,576.02 mi (7,364.39 km) |
| Boppard to Union City (California) | 5,638.72 mi (9,074.64 km) |
| Boppard to Union City (Georgia) | 4,566.53 mi (7,349.12 km) |
| Boppard to Union City (New Jersey) | 3,805.37 mi (6,124.15 km) |
| Boppard to Union City (Tennessee) | 4,602.64 mi (7,407.23 km) |
| Boppard to Union Hill-Novelty Hill (Washington) | 5,038.44 mi (8,108.59 km) |
| Boppard to Union Park (Florida) | 4,679.38 mi (7,530.74 km) |
| Boppard to Uniondale (New York) | 3,789.86 mi (6,099.20 km) |
| Boppard to Universal City (Texas) | 5,313.21 mi (8,550.78 km) |
| Boppard to University (Florida) | 4,754.04 mi (7,650.89 km) |
| Boppard to University City (Missouri) | 4,540.01 mi (7,306.44 km) |
| Boppard to University Heights (Ohio) | 4,069.42 mi (6,549.11 km) |
| Boppard to University of California-Santa Barbara (California) | 5,767.92 mi (9,282.57 km) |
| Boppard to University Park (Texas) | 5,080.72 mi (8,176.64 km) |
