| Sofia to River Ridge (Louisiana) | 5,884.43 mi (9,470.08 km) |
| Sofia to Riverbank (California) | 6,443.90 mi (10,370.45 km) |
| Sofia to Riverdale (Georgia) | 5,468.34 mi (8,800.44 km) |
| Sofia to Riverdale (Illinois) | 5,201.23 mi (8,370.56 km) |
| Sofia to Riverside (California) | 6,588.59 mi (10,603.31 km) |
| Sofia to Riverside (Ohio) | 5,158.40 mi (8,301.64 km) |
| Sofia to Riverton (Utah) | 6,046.07 mi (9,730.21 km) |
| Sofia to Riverton (Wyoming) | 5,800.95 mi (9,335.73 km) |
| Sofia to Riverview (Florida) | 5,656.81 mi (9,103.76 km) |
| Sofia to Riverview (Michigan) | 5,010.65 mi (8,063.86 km) |
| Sofia to Riviera Beach (Florida) | 5,608.40 mi (9,025.86 km) |
| Sofia to Riviera Beach (Maryland) | 4,883.97 mi (7,859.99 km) |
| Sofia to Roanoke (Virginia) | 5,109.99 mi (8,223.73 km) |
| Sofia to Roanoke Rapids (North Carolina) | 5,052.50 mi (8,131.21 km) |
| Sofia to Robbinsdale (Minnesota) | 5,231.75 mi (8,419.69 km) |
