| Sofia to Red Bank (New Jersey) | 4,730.99 mi (7,613.79 km) |
| Sofia to Red Bank (Tennessee) | 5,429.17 mi (8,737.40 km) |
| Sofia to Red Bluff (California) | 6,320.13 mi (10,171.26 km) |
| Sofia to Red Hill (South Carolina) | 5,232.49 mi (8,420.88 km) |
| Sofia to Red Oak (Texas) | 6,005.88 mi (9,665.53 km) |
| Sofia to Red Wing (Minnesota) | 5,229.95 mi (8,416.79 km) |
| Sofia to Redan (Georgia) | 5,449.75 mi (8,770.53 km) |
| Sofia to Redding (California) | 6,297.92 mi (10,135.52 km) |
| Sofia to Redland (Maryland) | 4,910.69 mi (7,903.00 km) |
| Sofia to Redlands (California) | 6,575.68 mi (10,582.54 km) |
| Sofia to Redmond (Oregon) | 6,041.13 mi (9,722.26 km) |
| Sofia to Redmond (Washington) | 5,846.30 mi (9,408.71 km) |
| Sofia to Redondo Beach (California) | 6,619.55 mi (10,653.14 km) |
| Sofia to Redwood City (California) | 6,487.59 mi (10,440.76 km) |
| Sofia to Reedley (California) | 6,477.86 mi (10,425.11 km) |
