| Karlovo to River Ridge (Louisiana) | 5,946.24 mi (9,569.56 km) |
| Karlovo to Riverbank (California) | 6,481.47 mi (10,430.91 km) |
| Karlovo to Riverdale (Georgia) | 5,530.95 mi (8,901.21 km) |
| Karlovo to Riverdale (Illinois) | 5,257.72 mi (8,461.47 km) |
| Karlovo to Riverside (California) | 6,630.89 mi (10,671.39 km) |
| Karlovo to Riverside (Ohio) | 5,217.65 mi (8,396.99 km) |
| Karlovo to Riverton (Utah) | 6,089.01 mi (9,799.32 km) |
| Karlovo to Riverton (Wyoming) | 5,844.88 mi (9,406.42 km) |
| Karlovo to Riverview (Florida) | 5,723.07 mi (9,210.40 km) |
| Karlovo to Riverview (Michigan) | 5,068.82 mi (8,157.48 km) |
| Karlovo to Riviera Beach (Florida) | 5,675.95 mi (9,134.56 km) |
| Karlovo to Riviera Beach (Maryland) | 4,946.72 mi (7,960.97 km) |
| Karlovo to Roanoke (Virginia) | 5,172.46 mi (8,324.27 km) |
| Karlovo to Roanoke Rapids (North Carolina) | 5,116.34 mi (8,233.95 km) |
| Karlovo to Robbinsdale (Minnesota) | 5,283.23 mi (8,502.54 km) |
