| Weil am Rhein to Popovo | 946.03 mi (1,522.49 km) |
| Weil am Rhein to Provadia | 1,005.74 mi (1,618.58 km) |
| Weil am Rhein to Radnevo | 964.85 mi (1,552.77 km) |
| Weil am Rhein to Radomir | 823.75 mi (1,325.70 km) |
| Weil am Rhein to Rakitovo | 893.57 mi (1,438.06 km) |
| Weil am Rhein to Rakovski | 921.95 mi (1,483.73 km) |
| Weil am Rhein to Razgrad | 953.83 mi (1,535.05 km) |
| Weil am Rhein to Razlog | 870.28 mi (1,400.59 km) |
| Weil am Rhein to Ruse | 920.09 mi (1,480.73 km) |
| Weil am Rhein to Samokov | 857.82 mi (1,380.52 km) |
| Weil am Rhein to Sandanski | 874.18 mi (1,406.86 km) |
| Weil am Rhein to Sevlievo | 904.74 mi (1,456.03 km) |
| Weil am Rhein to Shumen | 979.97 mi (1,577.11 km) |
| Weil am Rhein to Silistra | 972.70 mi (1,565.42 km) |
| Weil am Rhein to Sliven | 970.57 mi (1,561.98 km) |
