| Lauffen am Neckar to Popovo | 904.98 mi (1,456.43 km) |
| Lauffen am Neckar to Provadia | 962.42 mi (1,548.87 km) |
| Lauffen am Neckar to Radnevo | 932.84 mi (1,501.26 km) |
| Lauffen am Neckar to Radomir | 801.43 mi (1,289.77 km) |
| Lauffen am Neckar to Rakitovo | 871.08 mi (1,401.87 km) |
| Lauffen am Neckar to Rakovski | 893.55 mi (1,438.03 km) |
| Lauffen am Neckar to Razgrad | 910.51 mi (1,465.33 km) |
| Lauffen am Neckar to Razlog | 851.23 mi (1,369.93 km) |
| Lauffen am Neckar to Ruse | 876.11 mi (1,409.96 km) |
| Lauffen am Neckar to Samokov | 834.68 mi (1,343.29 km) |
| Lauffen am Neckar to Sandanski | 858.47 mi (1,381.57 km) |
| Lauffen am Neckar to Sevlievo | 869.93 mi (1,400.02 km) |
| Lauffen am Neckar to Shumen | 937.35 mi (1,508.51 km) |
| Lauffen am Neckar to Silistra | 922.85 mi (1,485.19 km) |
| Lauffen am Neckar to Sliven | 934.33 mi (1,503.66 km) |
