| Bay City to Popovo | 5,044.87 mi (8,118.93 km) |
| Bay City to Provadia | 5,095.70 mi (8,200.73 km) |
| Bay City to Radnevo | 5,085.10 mi (8,183.68 km) |
| Bay City to Radomir | 4,963.57 mi (7,988.09 km) |
| Bay City to Rakitovo | 5,032.55 mi (8,099.11 km) |
| Bay City to Rakovski | 5,050.38 mi (8,127.80 km) |
| Bay City to Razgrad | 5,046.06 mi (8,120.84 km) |
| Bay City to Razlog | 5,014.42 mi (8,069.92 km) |
| Bay City to Ruse | 5,011.97 mi (8,065.99 km) |
| Bay City to Samokov | 4,996.11 mi (8,040.47 km) |
| Bay City to Sandanski | 5,022.53 mi (8,082.98 km) |
| Bay City to Sevlievo | 5,020.25 mi (8,079.32 km) |
| Bay City to Shumen | 5,073.06 mi (8,164.30 km) |
| Bay City to Silistra | 5,043.82 mi (8,117.25 km) |
| Bay City to Sliven | 5,080.90 mi (8,176.92 km) |
