| Casas Adobes to Popovo | 6,550.80 mi (10,542.49 km) |
| Casas Adobes to Provadia | 6,594.64 mi (10,613.04 km) |
| Casas Adobes to Radnevo | 6,601.24 mi (10,623.67 km) |
| Casas Adobes to Radomir | 6,496.87 mi (10,455.71 km) |
| Casas Adobes to Rakitovo | 6,563.08 mi (10,562.26 km) |
| Casas Adobes to Rakovski | 6,572.98 mi (10,578.19 km) |
| Casas Adobes to Razgrad | 6,548.59 mi (10,538.93 km) |
| Casas Adobes to Razlog | 6,549.53 mi (10,540.44 km) |
| Casas Adobes to Ruse | 6,516.03 mi (10,486.54 km) |
| Casas Adobes to Samokov | 6,527.29 mi (10,504.66 km) |
| Casas Adobes to Sandanski | 6,561.09 mi (10,559.05 km) |
| Casas Adobes to Sevlievo | 6,536.22 mi (10,519.03 km) |
| Casas Adobes to Shumen | 6,574.70 mi (10,580.96 km) |
| Casas Adobes to Silistra | 6,536.47 mi (10,519.43 km) |
| Casas Adobes to Sliven | 6,591.38 mi (10,607.80 km) |
