| Houilles to Popovo | 1,207.88 mi (1,943.89 km) |
| Houilles to Provadia | 1,266.90 mi (2,038.87 km) |
| Houilles to Radnevo | 1,229.14 mi (1,978.11 km) |
| Houilles to Radomir | 1,089.23 mi (1,752.95 km) |
| Houilles to Rakitovo | 1,159.10 mi (1,865.38 km) |
| Houilles to Rakovski | 1,186.82 mi (1,910.01 km) |
| Houilles to Razgrad | 1,214.89 mi (1,955.18 km) |
| Houilles to Razlog | 1,135.98 mi (1,828.19 km) |
| Houilles to Ruse | 1,180.84 mi (1,900.37 km) |
| Houilles to Samokov | 1,123.26 mi (1,807.71 km) |
| Houilles to Sandanski | 1,139.92 mi (1,834.52 km) |
| Houilles to Sevlievo | 1,168.31 mi (1,880.22 km) |
| Houilles to Shumen | 1,241.33 mi (1,997.73 km) |
| Houilles to Silistra | 1,231.06 mi (1,981.19 km) |
| Houilles to Sliven | 1,233.89 mi (1,985.76 km) |
