| Cities | Distance |
|---|
| Guastalla to Popovo | 778.26 mi (1,252.49 km) |
| Guastalla to Provadia | 839.65 mi (1,351.28 km) |
| Guastalla to Radnevo | 783.58 mi (1,261.05 km) |
| Guastalla to Radomir | 633.96 mi (1,020.26 km) |
| Guastalla to Rakitovo | 701.88 mi (1,129.56 km) |
| Guastalla to Rakovski | 737.02 mi (1,186.12 km) |
| Guastalla to Razgrad | 789.29 mi (1,270.24 km) |
| Guastalla to Razlog | 675.03 mi (1,086.36 km) |
| Guastalla to Ruse | 757.68 mi (1,219.37 km) |
| Guastalla to Samokov | 667.97 mi (1,074.99 km) |
| Guastalla to Sandanski | 674.93 mi (1,086.19 km) |
| Guastalla to Sevlievo | 729.13 mi (1,173.42 km) |
| Guastalla to Shumen | 813.56 mi (1,309.29 km) |
| Guastalla to Silistra | 817.96 mi (1,316.37 km) |
| Guastalla to Sliven | 795.04 mi (1,279.49 km) |
