| Karlovo to Reims | 1,092.95 mi (1,758.94 km) |
| Karlovo to Rennes | 1,332.35 mi (2,144.20 km) |
| Karlovo to Revel | 1,149.09 mi (1,849.28 km) |
| Karlovo to Reze | 1,321.34 mi (2,126.49 km) |
| Karlovo to Riedisheim | 916.91 mi (1,475.62 km) |
| Karlovo to Rillieux-la-Pape | 1,006.94 mi (1,620.51 km) |
| Karlovo to Riom | 1,092.98 mi (1,758.99 km) |
| Karlovo to Riorges | 1,049.42 mi (1,688.88 km) |
| Karlovo to Ris-Orangis | 1,153.25 mi (1,855.97 km) |
| Karlovo to Rive-de-Gier | 1,018.80 mi (1,639.60 km) |
| Karlovo to Rivesaltes | 1,110.49 mi (1,787.17 km) |
| Karlovo to Rixheim | 915.24 mi (1,472.93 km) |
| Karlovo to Roanne | 1,048.03 mi (1,686.64 km) |
| Karlovo to Roche-la-Moliere | 1,032.54 mi (1,661.72 km) |
| Karlovo to Rochefort | 1,288.62 mi (2,073.84 km) |
