| Castel San Giovanni to Popovo | 838.86 mi (1,350.01 km) |
| Castel San Giovanni to Provadia | 900.22 mi (1,448.76 km) |
| Castel San Giovanni to Radnevo | 844.55 mi (1,359.17 km) |
| Castel San Giovanni to Radomir | 694.92 mi (1,118.37 km) |
| Castel San Giovanni to Rakitovo | 762.78 mi (1,227.57 km) |
| Castel San Giovanni to Rakovski | 798.00 mi (1,284.25 km) |
| Castel San Giovanni to Razgrad | 849.75 mi (1,367.53 km) |
| Castel San Giovanni to Razlog | 735.84 mi (1,184.22 km) |
| Castel San Giovanni to Ruse | 817.99 mi (1,316.43 km) |
| Castel San Giovanni to Samokov | 728.92 mi (1,173.08 km) |
| Castel San Giovanni to Sandanski | 735.54 mi (1,183.75 km) |
| Castel San Giovanni to Sevlievo | 789.97 mi (1,271.34 km) |
| Castel San Giovanni to Shumen | 874.12 mi (1,406.76 km) |
| Castel San Giovanni to Silistra | 877.86 mi (1,412.78 km) |
| Castel San Giovanni to Sliven | 855.91 mi (1,377.45 km) |
