| Mont-de-Marsan to Popovo | 1,331.84 mi (2,143.39 km) |
| Mont-de-Marsan to Provadia | 1,393.30 mi (2,242.30 km) |
| Mont-de-Marsan to Radnevo | 1,332.45 mi (2,144.38 km) |
| Mont-de-Marsan to Radomir | 1,180.36 mi (1,899.60 km) |
| Mont-de-Marsan to Rakitovo | 1,245.83 mi (2,004.97 km) |
| Mont-de-Marsan to Rakovski | 1,284.58 mi (2,067.34 km) |
| Mont-de-Marsan to Razgrad | 1,343.47 mi (2,162.10 km) |
| Mont-de-Marsan to Razlog | 1,216.88 mi (1,958.38 km) |
| Mont-de-Marsan to Ruse | 1,312.31 mi (2,111.96 km) |
| Mont-de-Marsan to Samokov | 1,213.73 mi (1,953.31 km) |
| Mont-de-Marsan to Sandanski | 1,213.38 mi (1,952.75 km) |
| Mont-de-Marsan to Sevlievo | 1,280.84 mi (2,061.31 km) |
| Mont-de-Marsan to Shumen | 1,367.26 mi (2,200.39 km) |
| Mont-de-Marsan to Silistra | 1,373.16 mi (2,209.89 km) |
| Mont-de-Marsan to Sliven | 1,346.22 mi (2,166.54 km) |
