| Solingen to Popovo | 1,043.26 mi (1,678.97 km) |
| Solingen to Provadia | 1,098.16 mi (1,767.32 km) |
| Solingen to Radnevo | 1,077.67 mi (1,734.34 km) |
| Solingen to Radomir | 953.84 mi (1,535.06 km) |
| Solingen to Rakitovo | 1,022.70 mi (1,645.88 km) |
| Solingen to Rakovski | 1,041.24 mi (1,675.72 km) |
| Solingen to Razgrad | 1,046.85 mi (1,684.74 km) |
| Solingen to Razlog | 1,005.03 mi (1,617.44 km) |
| Solingen to Ruse | 1,012.34 mi (1,629.20 km) |
| Solingen to Samokov | 986.27 mi (1,587.25 km) |
| Solingen to Sandanski | 1,014.01 mi (1,631.88 km) |
| Solingen to Sevlievo | 1,013.42 mi (1,630.94 km) |
| Solingen to Shumen | 1,073.95 mi (1,728.36 km) |
| Solingen to Silistra | 1,053.28 mi (1,695.10 km) |
| Solingen to Sliven | 1,076.04 mi (1,731.71 km) |
