| Sofia to Ukiah (California) | 6,406.00 mi (10,309.47 km) |
| Sofia to Union (Missouri) | 5,483.72 mi (8,825.19 km) |
| Sofia to Union City (California) | 6,476.52 mi (10,422.96 km) |
| Sofia to Union City (Georgia) | 5,473.12 mi (8,808.14 km) |
| Sofia to Union City (New Jersey) | 4,711.57 mi (7,582.53 km) |
| Sofia to Union City (Tennessee) | 5,511.71 mi (8,870.24 km) |
| Sofia to Union Hill-Novelty Hill (Washington) | 5,844.42 mi (9,405.68 km) |
| Sofia to Union Park (Florida) | 5,574.44 mi (8,971.19 km) |
| Sofia to Uniondale (New York) | 4,695.69 mi (7,556.98 km) |
| Sofia to Universal City (Texas) | 6,221.82 mi (10,013.06 km) |
| Sofia to University (Florida) | 5,650.24 mi (9,093.19 km) |
| Sofia to University City (Missouri) | 5,447.91 mi (8,767.56 km) |
| Sofia to University Heights (Ohio) | 4,978.54 mi (8,012.18 km) |
| Sofia to University of California-Santa Barbara (California) | 6,623.28 mi (10,659.14 km) |
| Sofia to University Park (Texas) | 5,988.59 mi (9,637.70 km) |
