| Bullhead City to Popovo | 6,479.38 mi (10,427.55 km) |
| Bullhead City to Provadia | 6,520.17 mi (10,493.20 km) |
| Bullhead City to Radnevo | 6,533.43 mi (10,514.53 km) |
| Bullhead City to Radomir | 6,437.02 mi (10,359.38 km) |
| Bullhead City to Rakitovo | 6,501.52 mi (10,463.18 km) |
| Bullhead City to Rakovski | 6,508.02 mi (10,473.65 km) |
| Bullhead City to Razgrad | 6,475.88 mi (10,421.92 km) |
| Bullhead City to Razlog | 6,490.03 mi (10,444.69 km) |
| Bullhead City to Ruse | 6,444.18 mi (10,370.91 km) |
| Bullhead City to Samokov | 6,466.29 mi (10,406.49 km) |
| Bullhead City to Sandanski | 6,503.00 mi (10,465.57 km) |
| Bullhead City to Sevlievo | 6,468.87 mi (10,410.64 km) |
| Bullhead City to Shumen | 6,501.43 mi (10,463.05 km) |
| Bullhead City to Silistra | 6,460.15 mi (10,396.60 km) |
| Bullhead City to Sliven | 6,521.40 mi (10,495.18 km) |
