| Romford to Popovo | 1,333.64 mi (2,146.29 km) |
| Romford to Provadia | 1,390.03 mi (2,237.04 km) |
| Romford to Radnevo | 1,363.55 mi (2,194.41 km) |
| Romford to Radomir | 1,232.37 mi (1,983.31 km) |
| Romford to Rakitovo | 1,302.09 mi (2,095.52 km) |
| Romford to Rakovski | 1,324.63 mi (2,131.79 km) |
| Romford to Razgrad | 1,338.33 mi (2,153.84 km) |
| Romford to Razlog | 1,281.86 mi (2,062.96 km) |
| Romford to Ruse | 1,303.83 mi (2,098.31 km) |
| Romford to Samokov | 1,265.72 mi (2,036.97 km) |
| Romford to Sandanski | 1,288.53 mi (2,073.69 km) |
| Romford to Sevlievo | 1,300.29 mi (2,092.61 km) |
| Romford to Shumen | 1,365.33 mi (2,197.28 km) |
| Romford to Silistra | 1,347.54 mi (2,168.65 km) |
| Romford to Sliven | 1,364.25 mi (2,195.56 km) |
