| Cities | Distance |
|---|
| Rheinfelden to Popovo | 936.78 mi (1,507.60 km) |
| Rheinfelden to Provadia | 996.51 mi (1,603.73 km) |
| Rheinfelden to Radnevo | 955.52 mi (1,537.76 km) |
| Rheinfelden to Radomir | 814.41 mi (1,310.66 km) |
| Rheinfelden to Rakitovo | 884.23 mi (1,423.03 km) |
| Rheinfelden to Rakovski | 912.61 mi (1,468.70 km) |
| Rheinfelden to Razgrad | 944.61 mi (1,520.20 km) |
| Rheinfelden to Razlog | 860.94 mi (1,385.56 km) |
| Rheinfelden to Ruse | 910.87 mi (1,465.91 km) |
| Rheinfelden to Samokov | 848.47 mi (1,365.49 km) |
| Rheinfelden to Sandanski | 864.86 mi (1,391.85 km) |
| Rheinfelden to Sevlievo | 895.43 mi (1,441.06 km) |
| Rheinfelden to Shumen | 970.73 mi (1,562.24 km) |
| Rheinfelden to Silistra | 963.57 mi (1,550.72 km) |
| Rheinfelden to Sliven | 961.27 mi (1,547.02 km) |
