| Upminster to Popovo | 1,330.32 mi (2,140.94 km) |
| Upminster to Provadia | 1,386.72 mi (2,231.71 km) |
| Upminster to Radnevo | 1,360.19 mi (2,189.02 km) |
| Upminster to Radomir | 1,229.00 mi (1,977.88 km) |
| Upminster to Rakitovo | 1,298.72 mi (2,090.09 km) |
| Upminster to Rakovski | 1,321.27 mi (2,126.37 km) |
| Upminster to Razgrad | 1,335.01 mi (2,148.50 km) |
| Upminster to Razlog | 1,278.48 mi (2,057.52 km) |
| Upminster to Ruse | 1,300.51 mi (2,092.97 km) |
| Upminster to Samokov | 1,262.34 mi (2,031.54 km) |
| Upminster to Sandanski | 1,285.15 mi (2,068.25 km) |
| Upminster to Sevlievo | 1,296.94 mi (2,087.22 km) |
| Upminster to Shumen | 1,362.01 mi (2,191.94 km) |
| Upminster to Silistra | 1,344.25 mi (2,163.36 km) |
| Upminster to Sliven | 1,360.91 mi (2,190.18 km) |
