| West Allis to Popovo | 5,219.30 mi (8,399.66 km) |
| West Allis to Provadia | 5,269.00 mi (8,479.64 km) |
| West Allis to Radnevo | 5,261.46 mi (8,467.50 km) |
| West Allis to Radomir | 5,142.81 mi (8,276.55 km) |
| West Allis to Rakitovo | 5,211.42 mi (8,386.97 km) |
| West Allis to Rakovski | 5,227.83 mi (8,413.39 km) |
| West Allis to Razgrad | 5,219.89 mi (8,400.59 km) |
| West Allis to Razlog | 5,194.09 mi (8,359.09 km) |
| West Allis to Ruse | 5,185.99 mi (8,346.05 km) |
| West Allis to Samokov | 5,175.03 mi (8,328.40 km) |
| West Allis to Sandanski | 5,202.86 mi (8,373.20 km) |
| West Allis to Sevlievo | 5,196.44 mi (8,362.86 km) |
| West Allis to Shumen | 5,246.79 mi (8,443.90 km) |
| West Allis to Silistra | 5,215.89 mi (8,394.16 km) |
| West Allis to Sliven | 5,256.23 mi (8,459.09 km) |
