| Smolyan to Ukiah (California) | 6,505.52 mi (10,469.62 km) |
| Smolyan to Union (Missouri) | 5,587.79 mi (8,992.68 km) |
| Smolyan to Union City (California) | 6,576.82 mi (10,584.36 km) |
| Smolyan to Union City (Georgia) | 5,575.50 mi (8,972.91 km) |
| Smolyan to Union City (New Jersey) | 4,813.88 mi (7,747.20 km) |
| Smolyan to Union City (Tennessee) | 5,615.37 mi (9,037.07 km) |
| Smolyan to Union Hill-Novelty Hill (Washington) | 5,942.35 mi (9,563.29 km) |
| Smolyan to Union Park (Florida) | 5,674.35 mi (9,131.98 km) |
| Smolyan to Uniondale (New York) | 4,797.92 mi (7,721.50 km) |
| Smolyan to Universal City (Texas) | 6,325.72 mi (10,180.27 km) |
| Smolyan to University (Florida) | 5,750.35 mi (9,254.29 km) |
| Smolyan to University City (Missouri) | 5,551.95 mi (8,935.00 km) |
| Smolyan to University Heights (Ohio) | 5,082.11 mi (8,178.87 km) |
| Smolyan to University of California-Santa Barbara (California) | 6,724.92 mi (10,822.71 km) |
| Smolyan to University Park (Texas) | 6,092.64 mi (9,805.16 km) |
