| Calne to Popovo | 1,422.80 mi (2,289.78 km) |
| Calne to Provadia | 1,479.72 mi (2,381.37 km) |
| Calne to Radnevo | 1,451.03 mi (2,335.21 km) |
| Calne to Radomir | 1,317.62 mi (2,120.51 km) |
| Calne to Rakitovo | 1,387.48 mi (2,232.94 km) |
| Calne to Rakovski | 1,411.31 mi (2,271.28 km) |
| Calne to Razgrad | 1,427.91 mi (2,297.99 km) |
| Calne to Razlog | 1,366.46 mi (2,199.11 km) |
| Calne to Ruse | 1,393.44 mi (2,242.52 km) |
| Calne to Samokov | 1,351.19 mi (2,174.53 km) |
| Calne to Sandanski | 1,372.38 mi (2,208.63 km) |
| Calne to Sevlievo | 1,388.21 mi (2,234.10 km) |
| Calne to Shumen | 1,454.84 mi (2,341.33 km) |
| Calne to Silistra | 1,438.23 mi (2,314.61 km) |
| Calne to Sliven | 1,452.58 mi (2,337.70 km) |
