| Muscle Shoals to Popovo | 5,624.60 mi (9,051.92 km) |
| Muscle Shoals to Provadia | 5,677.77 mi (9,137.48 km) |
| Muscle Shoals to Radnevo | 5,660.16 mi (9,109.15 km) |
| Muscle Shoals to Radomir | 5,531.86 mi (8,902.67 km) |
| Muscle Shoals to Rakitovo | 5,601.53 mi (9,014.80 km) |
| Muscle Shoals to Rakovski | 5,622.89 mi (9,049.17 km) |
| Muscle Shoals to Razgrad | 5,627.15 mi (9,056.02 km) |
| Muscle Shoals to Razlog | 5,581.35 mi (8,982.31 km) |
| Muscle Shoals to Ruse | 5,592.76 mi (9,000.68 km) |
| Muscle Shoals to Samokov | 5,565.13 mi (8,956.21 km) |
| Muscle Shoals to Sandanski | 5,587.67 mi (8,992.48 km) |
| Muscle Shoals to Sevlievo | 5,595.99 mi (9,005.87 km) |
| Muscle Shoals to Shumen | 5,654.26 mi (9,099.66 km) |
| Muscle Shoals to Silistra | 5,628.77 mi (9,058.63 km) |
| Muscle Shoals to Sliven | 5,658.42 mi (9,106.34 km) |
