| Calera to Popovo | 5,672.78 mi (9,129.46 km) |
| Calera to Provadia | 5,726.81 mi (9,216.41 km) |
| Calera to Radnevo | 5,706.44 mi (9,183.64 km) |
| Calera to Radomir | 5,575.76 mi (8,973.32 km) |
| Calera to Rakitovo | 5,645.58 mi (9,085.68 km) |
| Calera to Rakovski | 5,668.24 mi (9,122.15 km) |
| Calera to Razgrad | 5,675.87 mi (9,134.43 km) |
| Calera to Razlog | 5,624.66 mi (9,052.01 km) |
| Calera to Ruse | 5,641.41 mi (9,078.97 km) |
| Calera to Samokov | 5,609.24 mi (9,027.21 km) |
| Calera to Sandanski | 5,630.30 mi (9,061.09 km) |
| Calera to Sevlievo | 5,642.63 mi (9,080.93 km) |
| Calera to Shumen | 5,702.99 mi (9,178.08 km) |
| Calera to Silistra | 5,679.06 mi (9,139.57 km) |
| Calera to Sliven | 5,705.67 mi (9,182.38 km) |
