| Castelli Calepio to Popovo | 818.82 mi (1,317.77 km) |
| Castelli Calepio to Provadia | 879.93 mi (1,416.12 km) |
| Castelli Calepio to Radnevo | 828.30 mi (1,333.03 km) |
| Castelli Calepio to Radomir | 680.81 mi (1,095.66 km) |
| Castelli Calepio to Rakitovo | 749.58 mi (1,206.34 km) |
| Castelli Calepio to Rakovski | 782.72 mi (1,259.67 km) |
| Castelli Calepio to Razgrad | 828.92 mi (1,334.01 km) |
| Castelli Calepio to Razlog | 723.78 mi (1,164.81 km) |
| Castelli Calepio to Ruse | 796.52 mi (1,281.87 km) |
| Castelli Calepio to Samokov | 714.97 mi (1,150.64 km) |
| Castelli Calepio to Sandanski | 724.96 mi (1,166.70 km) |
| Castelli Calepio to Sevlievo | 771.90 mi (1,242.26 km) |
| Castelli Calepio to Shumen | 853.84 mi (1,374.13 km) |
| Castelli Calepio to Silistra | 854.74 mi (1,375.57 km) |
| Castelli Calepio to Sliven | 838.04 mi (1,348.69 km) |
