| Port-de-Bouc to Popovo | 1,064.02 mi (1,712.37 km) |
| Port-de-Bouc to Provadia | 1,125.41 mi (1,811.17 km) |
| Port-de-Bouc to Radnevo | 1,060.85 mi (1,707.27 km) |
| Port-de-Bouc to Radomir | 908.11 mi (1,461.46 km) |
| Port-de-Bouc to Rakitovo | 972.49 mi (1,565.07 km) |
| Port-de-Bouc to Rakovski | 1,012.48 mi (1,629.43 km) |
| Port-de-Bouc to Razgrad | 1,076.52 mi (1,732.49 km) |
| Port-de-Bouc to Razlog | 943.02 mi (1,517.65 km) |
| Port-de-Bouc to Ruse | 1,046.35 mi (1,683.94 km) |
| Port-de-Bouc to Samokov | 941.11 mi (1,514.57 km) |
| Port-de-Bouc to Sandanski | 938.76 mi (1,510.79 km) |
| Port-de-Bouc to Sevlievo | 1,011.24 mi (1,627.43 km) |
| Port-de-Bouc to Shumen | 1,099.50 mi (1,769.48 km) |
| Port-de-Bouc to Silistra | 1,109.10 mi (1,784.92 km) |
| Port-de-Bouc to Sliven | 1,076.01 mi (1,731.68 km) |
