| Rheinfelden to Devnya | 1,001.68 mi (1,612.05 km) |
| Rheinfelden to Dimitrovgrad | 949.00 mi (1,527.27 km) |
| Rheinfelden to Dobrich | 1,004.28 mi (1,616.23 km) |
| Rheinfelden to Dospat | 900.04 mi (1,448.47 km) |
| Rheinfelden to Dupnitsa | 831.87 mi (1,338.76 km) |
| Rheinfelden to Elhovo | 988.39 mi (1,590.66 km) |
| Rheinfelden to Etropole | 851.43 mi (1,370.24 km) |
| Rheinfelden to Gabrovo | 910.30 mi (1,464.99 km) |
| Rheinfelden to Gorna Oryahovitsa | 918.78 mi (1,478.64 km) |
| Rheinfelden to Gotse Delchev | 884.35 mi (1,423.22 km) |
| Rheinfelden to Harmanli | 966.38 mi (1,555.23 km) |
| Rheinfelden to Haskovo | 951.54 mi (1,531.35 km) |
| Rheinfelden to Ihtiman | 856.51 mi (1,378.42 km) |
| Rheinfelden to Isperih | 954.18 mi (1,535.60 km) |
| Rheinfelden to Kardzhali | 952.66 mi (1,533.16 km) |
