| Trier to Popovo | 1,026.70 mi (1,652.32 km) |
| Trier to Provadia | 1,083.94 mi (1,744.43 km) |
| Trier to Radnevo | 1,054.80 mi (1,697.54 km) |
| Trier to Radomir | 922.87 mi (1,485.21 km) |
| Trier to Rakitovo | 992.59 mi (1,597.42 km) |
| Trier to Rakovski | 1,015.43 mi (1,634.17 km) |
| Trier to Razgrad | 1,032.06 mi (1,660.94 km) |
| Trier to Razlog | 972.40 mi (1,564.93 km) |
| Trier to Ruse | 997.63 mi (1,605.53 km) |
| Trier to Samokov | 956.22 mi (1,538.88 km) |
| Trier to Sandanski | 979.25 mi (1,575.95 km) |
| Trier to Sevlievo | 991.89 mi (1,596.29 km) |
| Trier to Shumen | 1,058.94 mi (1,704.19 km) |
| Trier to Silistra | 1,043.66 mi (1,679.61 km) |
| Trier to Sliven | 1,056.25 mi (1,699.87 km) |
