| Romulus to Popovo | 5,092.11 mi (8,194.96 km) |
| Romulus to Provadia | 5,143.70 mi (8,277.99 km) |
| Romulus to Radnevo | 5,130.92 mi (8,257.41 km) |
| Romulus to Radomir | 5,007.27 mi (8,058.42 km) |
| Romulus to Rakitovo | 5,076.50 mi (8,169.84 km) |
| Romulus to Rakovski | 5,095.40 mi (8,200.25 km) |
| Romulus to Razgrad | 5,093.72 mi (8,197.56 km) |
| Romulus to Razlog | 5,057.75 mi (8,139.66 km) |
| Romulus to Ruse | 5,059.53 mi (8,142.52 km) |
| Romulus to Samokov | 5,040.05 mi (8,111.18 km) |
| Romulus to Sandanski | 5,065.34 mi (8,151.88 km) |
| Romulus to Sevlievo | 5,066.24 mi (8,153.32 km) |
| Romulus to Shumen | 5,120.78 mi (8,241.10 km) |
| Romulus to Silistra | 5,092.72 mi (8,195.95 km) |
| Romulus to Sliven | 5,127.47 mi (8,251.86 km) |
