| Sofia to Robertsville (New Jersey) | 4,740.70 mi (7,629.42 km) |
| Sofia to Robinson (Texas) | 6,075.45 mi (9,777.49 km) |
| Sofia to Robstown (Texas) | 6,292.08 mi (10,126.12 km) |
| Sofia to Rochester (Michigan) | 4,983.91 mi (8,020.83 km) |
| Sofia to Rochester (Minnesota) | 5,254.33 mi (8,456.03 km) |
| Sofia to Rochester (New Hampshire) | 4,481.08 mi (7,211.61 km) |
| Sofia to Rochester (New York) | 4,751.28 mi (7,646.45 km) |
| Sofia to Rochester Hills (Michigan) | 4,986.31 mi (8,024.69 km) |
| Sofia to Rock Hill (South Carolina) | 5,262.78 mi (8,469.62 km) |
| Sofia to Rock Island (Illinois) | 5,316.40 mi (8,555.92 km) |
| Sofia to Rock Springs (Wyoming) | 5,907.20 mi (9,506.72 km) |
| Sofia to Rockford (Illinois) | 5,222.84 mi (8,405.35 km) |
| Sofia to Rockledge (Florida) | 5,564.27 mi (8,954.83 km) |
| Sofia to Rocklin (California) | 6,383.46 mi (10,273.19 km) |
| Sofia to Rockport (Texas) | 6,256.46 mi (10,068.80 km) |
