| Oberhausen-Rheinhausen to Popovo | 937.38 mi (1,508.57 km) |
| Oberhausen-Rheinhausen to Provadia | 994.78 mi (1,600.94 km) |
| Oberhausen-Rheinhausen to Radnevo | 965.27 mi (1,553.46 km) |
| Oberhausen-Rheinhausen to Radomir | 833.66 mi (1,341.64 km) |
| Oberhausen-Rheinhausen to Rakitovo | 903.34 mi (1,453.78 km) |
| Oberhausen-Rheinhausen to Rakovski | 925.94 mi (1,490.16 km) |
| Oberhausen-Rheinhausen to Razgrad | 942.87 mi (1,517.41 km) |
| Oberhausen-Rheinhausen to Razlog | 883.38 mi (1,421.66 km) |
| Oberhausen-Rheinhausen to Ruse | 908.46 mi (1,462.03 km) |
| Oberhausen-Rheinhausen to Samokov | 866.95 mi (1,395.21 km) |
| Oberhausen-Rheinhausen to Sandanski | 890.48 mi (1,433.09 km) |
| Oberhausen-Rheinhausen to Sevlievo | 902.37 mi (1,452.23 km) |
| Oberhausen-Rheinhausen to Shumen | 969.72 mi (1,560.61 km) |
| Oberhausen-Rheinhausen to Silistra | 955.03 mi (1,536.97 km) |
| Oberhausen-Rheinhausen to Sliven | 966.77 mi (1,555.86 km) |
