| Karlsdorf-Neuthard to Popovo | 932.09 mi (1,500.05 km) |
| Karlsdorf-Neuthard to Provadia | 989.65 mi (1,592.69 km) |
| Karlsdorf-Neuthard to Radnevo | 959.46 mi (1,544.10 km) |
| Karlsdorf-Neuthard to Radomir | 827.27 mi (1,331.36 km) |
| Karlsdorf-Neuthard to Rakitovo | 896.99 mi (1,443.56 km) |
| Karlsdorf-Neuthard to Rakovski | 919.91 mi (1,480.46 km) |
| Karlsdorf-Neuthard to Razgrad | 937.72 mi (1,509.11 km) |
| Karlsdorf-Neuthard to Razlog | 876.85 mi (1,411.15 km) |
| Karlsdorf-Neuthard to Ruse | 903.33 mi (1,453.77 km) |
| Karlsdorf-Neuthard to Samokov | 860.61 mi (1,385.02 km) |
| Karlsdorf-Neuthard to Sandanski | 883.79 mi (1,422.33 km) |
| Karlsdorf-Neuthard to Sevlievo | 896.69 mi (1,443.08 km) |
| Karlsdorf-Neuthard to Shumen | 964.53 mi (1,552.27 km) |
| Karlsdorf-Neuthard to Silistra | 950.30 mi (1,529.36 km) |
| Karlsdorf-Neuthard to Sliven | 961.20 mi (1,546.90 km) |
