| Karlovo to Robertsville (New Jersey) | 4,803.59 mi (7,730.62 km) |
| Karlovo to Robinson (Texas) | 6,132.90 mi (9,869.94 km) |
| Karlovo to Robstown (Texas) | 6,351.12 mi (10,221.14 km) |
| Karlovo to Rochester (Michigan) | 5,041.78 mi (8,113.97 km) |
| Karlovo to Rochester (Minnesota) | 5,306.92 mi (8,540.66 km) |
| Karlovo to Rochester (New Hampshire) | 4,543.31 mi (7,311.75 km) |
| Karlovo to Rochester (New York) | 4,811.13 mi (7,742.77 km) |
| Karlovo to Rochester Hills (Michigan) | 5,044.18 mi (8,117.83 km) |
| Karlovo to Rock Hill (South Carolina) | 5,326.09 mi (8,571.52 km) |
| Karlovo to Rock Island (Illinois) | 5,371.57 mi (8,644.70 km) |
| Karlovo to Rock Springs (Wyoming) | 5,951.43 mi (9,577.90 km) |
| Karlovo to Rockford (Illinois) | 5,278.26 mi (8,494.54 km) |
| Karlovo to Rockledge (Florida) | 5,630.91 mi (9,062.07 km) |
| Karlovo to Rocklin (California) | 6,420.26 mi (10,332.42 km) |
| Karlovo to Rockport (Texas) | 6,315.71 mi (10,164.16 km) |
