| Blackfoot to Popovo | 5,931.83 mi (9,546.36 km) |
| Blackfoot to Provadia | 5,970.79 mi (9,609.06 km) |
| Blackfoot to Radnevo | 5,987.92 mi (9,636.62 km) |
| Blackfoot to Radomir | 5,896.83 mi (9,490.03 km) |
| Blackfoot to Rakitovo | 5,960.03 mi (9,591.74 km) |
| Blackfoot to Rakovski | 5,964.34 mi (9,598.68 km) |
| Blackfoot to Razgrad | 5,927.59 mi (9,539.54 km) |
| Blackfoot to Razlog | 5,949.94 mi (9,575.50 km) |
| Blackfoot to Ruse | 5,896.47 mi (9,489.44 km) |
| Blackfoot to Samokov | 5,925.26 mi (9,535.79 km) |
| Blackfoot to Sandanski | 5,963.82 mi (9,597.84 km) |
| Blackfoot to Sevlievo | 5,923.80 mi (9,533.43 km) |
| Blackfoot to Shumen | 5,952.77 mi (9,580.06 km) |
| Blackfoot to Silistra | 5,909.85 mi (9,510.98 km) |
| Blackfoot to Sliven | 5,974.61 mi (9,615.20 km) |
