| Butler to Popovo | 5,027.46 mi (8,090.92 km) |
| Butler to Provadia | 5,080.68 mi (8,176.57 km) |
| Butler to Radnevo | 5,063.04 mi (8,148.18 km) |
| Butler to Radomir | 4,935.01 mi (7,942.13 km) |
| Butler to Rakitovo | 5,004.65 mi (8,054.21 km) |
| Butler to Rakovski | 5,025.84 mi (8,088.30 km) |
| Butler to Razgrad | 5,030.04 mi (8,095.07 km) |
| Butler to Razlog | 4,984.60 mi (8,021.93 km) |
| Butler to Ruse | 4,995.65 mi (8,039.71 km) |
| Butler to Samokov | 4,968.24 mi (7,995.61 km) |
| Butler to Sandanski | 4,991.06 mi (8,032.33 km) |
| Butler to Sevlievo | 4,998.85 mi (8,044.87 km) |
| Butler to Shumen | 5,057.16 mi (8,138.71 km) |
| Butler to Silistra | 5,031.83 mi (8,097.94 km) |
| Butler to Sliven | 5,061.27 mi (8,145.32 km) |
