| Cities | Distance |
|---|
| Richterswil to Popovo | 891.02 mi (1,433.96 km) |
| Richterswil to Provadia | 950.97 mi (1,530.44 km) |
| Richterswil to Radnevo | 908.77 mi (1,462.52 km) |
| Richterswil to Radomir | 767.02 mi (1,234.40 km) |
| Richterswil to Rakitovo | 836.80 mi (1,346.70 km) |
| Richterswil to Rakovski | 865.58 mi (1,393.02 km) |
| Richterswil to Razgrad | 899.13 mi (1,447.01 km) |
| Richterswil to Razlog | 813.34 mi (1,308.94 km) |
| Richterswil to Ruse | 865.53 mi (1,392.93 km) |
| Richterswil to Samokov | 801.11 mi (1,289.27 km) |
| Richterswil to Sandanski | 817.10 mi (1,314.99 km) |
| Richterswil to Sevlievo | 849.01 mi (1,366.35 km) |
| Richterswil to Shumen | 925.13 mi (1,488.86 km) |
| Richterswil to Silistra | 919.02 mi (1,479.02 km) |
| Richterswil to Sliven | 914.93 mi (1,472.44 km) |
