| Cities | Distance |
|---|
| Frohburg to Popovo | 831.82 mi (1,338.68 km) |
| Frohburg to Provadia | 883.34 mi (1,421.59 km) |
| Frohburg to Radnevo | 873.97 mi (1,406.51 km) |
| Frohburg to Radomir | 764.72 mi (1,230.70 km) |
| Frohburg to Rakitovo | 830.73 mi (1,336.93 km) |
| Frohburg to Rakovski | 842.32 mi (1,355.58 km) |
| Frohburg to Razgrad | 833.24 mi (1,340.97 km) |
| Frohburg to Razlog | 817.55 mi (1,315.71 km) |
| Frohburg to Ruse | 799.05 mi (1,285.95 km) |
| Frohburg to Samokov | 794.93 mi (1,279.32 km) |
| Frohburg to Sandanski | 829.99 mi (1,335.74 km) |
| Frohburg to Sevlievo | 808.83 mi (1,301.69 km) |
| Frohburg to Shumen | 860.30 mi (1,384.52 km) |
| Frohburg to Silistra | 833.94 mi (1,342.09 km) |
| Frohburg to Sliven | 868.24 mi (1,397.29 km) |
