| Fall River to Popovo | 4,643.26 mi (7,472.61 km) |
| Fall River to Provadia | 4,698.46 mi (7,561.44 km) |
| Fall River to Radnevo | 4,674.40 mi (7,522.72 km) |
| Fall River to Radomir | 4,541.16 mi (7,308.28 km) |
| Fall River to Rakitovo | 4,611.06 mi (7,420.79 km) |
| Fall River to Rakovski | 4,635.13 mi (7,459.53 km) |
| Fall River to Razgrad | 4,647.12 mi (7,478.82 km) |
| Fall River to Razlog | 4,589.42 mi (7,385.96 km) |
| Fall River to Ruse | 4,612.60 mi (7,423.27 km) |
| Fall River to Samokov | 4,574.84 mi (7,362.49 km) |
| Fall River to Sandanski | 4,594.42 mi (7,394.01 km) |
| Fall River to Sevlievo | 4,611.10 mi (7,420.85 km) |
| Fall River to Shumen | 4,674.21 mi (7,522.42 km) |
| Fall River to Silistra | 4,652.70 mi (7,487.79 km) |
| Fall River to Sliven | 4,674.85 mi (7,523.44 km) |
