| Butte to Popovo | 5,775.26 mi (9,294.38 km) |
| Butte to Provadia | 5,812.96 mi (9,355.06 km) |
| Butte to Radnevo | 5,832.60 mi (9,386.67 km) |
| Butte to Radomir | 5,744.92 mi (9,245.56 km) |
| Butte to Rakitovo | 5,807.26 mi (9,345.89 km) |
| Butte to Rakovski | 5,810.21 mi (9,350.63 km) |
| Butte to Razgrad | 5,770.53 mi (9,286.78 km) |
| Butte to Razlog | 5,798.03 mi (9,331.03 km) |
| Butte to Ruse | 5,739.81 mi (9,237.33 km) |
| Butte to Samokov | 5,772.81 mi (9,290.44 km) |
| Butte to Sandanski | 5,812.45 mi (9,354.23 km) |
| Butte to Sevlievo | 5,768.82 mi (9,284.02 km) |
| Butte to Shumen | 5,795.44 mi (9,326.86 km) |
| Butte to Silistra | 5,751.45 mi (9,256.07 km) |
| Butte to Sliven | 5,818.49 mi (9,363.95 km) |
