| Centennial to Popovo | 5,944.53 mi (9,566.80 km) |
| Centennial to Provadia | 5,988.75 mi (9,637.96 km) |
| Centennial to Radnevo | 5,994.60 mi (9,647.38 km) |
| Centennial to Radomir | 5,889.82 mi (9,478.75 km) |
| Centennial to Rakitovo | 5,956.07 mi (9,585.38 km) |
| Centennial to Rakovski | 5,966.14 mi (9,601.57 km) |
| Centennial to Razgrad | 5,942.48 mi (9,563.50 km) |
| Centennial to Razlog | 5,942.47 mi (9,563.47 km) |
| Centennial to Ruse | 5,909.83 mi (9,510.95 km) |
| Centennial to Samokov | 5,920.27 mi (9,527.75 km) |
| Centennial to Sandanski | 5,954.01 mi (9,582.05 km) |
| Centennial to Sevlievo | 5,929.55 mi (9,542.69 km) |
| Centennial to Shumen | 5,968.66 mi (9,605.63 km) |
| Centennial to Silistra | 5,930.88 mi (9,544.83 km) |
| Centennial to Sliven | 5,984.95 mi (9,631.84 km) |
