| Montlouis-sur-Loire to Popovo | 1,258.35 mi (2,025.11 km) |
| Montlouis-sur-Loire to Provadia | 1,318.68 mi (2,122.20 km) |
| Montlouis-sur-Loire to Radnevo | 1,272.89 mi (2,048.52 km) |
| Montlouis-sur-Loire to Radomir | 1,127.46 mi (1,814.47 km) |
| Montlouis-sur-Loire to Rakitovo | 1,196.61 mi (1,925.76 km) |
| Montlouis-sur-Loire to Rakovski | 1,228.32 mi (1,976.79 km) |
| Montlouis-sur-Loire to Razgrad | 1,266.97 mi (2,038.98 km) |
| Montlouis-sur-Loire to Razlog | 1,171.28 mi (1,885.00 km) |
| Montlouis-sur-Loire to Ruse | 1,233.58 mi (1,985.25 km) |
| Montlouis-sur-Loire to Samokov | 1,161.65 mi (1,869.49 km) |
| Montlouis-sur-Loire to Sandanski | 1,172.76 mi (1,887.37 km) |
| Montlouis-sur-Loire to Sevlievo | 1,214.59 mi (1,954.69 km) |
| Montlouis-sur-Loire to Shumen | 1,292.74 mi (2,080.47 km) |
| Montlouis-sur-Loire to Silistra | 1,287.78 mi (2,072.47 km) |
| Montlouis-sur-Loire to Sliven | 1,280.70 mi (2,061.09 km) |
