| Mablethorpe to Popovo | 1,366.80 mi (2,199.65 km) |
| Mablethorpe to Provadia | 1,420.84 mi (2,286.62 km) |
| Mablethorpe to Radnevo | 1,402.48 mi (2,257.07 km) |
| Mablethorpe to Radomir | 1,278.79 mi (2,058.01 km) |
| Mablethorpe to Rakitovo | 1,347.75 mi (2,168.99 km) |
| Mablethorpe to Rakovski | 1,366.33 mi (2,198.90 km) |
| Mablethorpe to Razgrad | 1,369.83 mi (2,204.53 km) |
| Mablethorpe to Razlog | 1,329.80 mi (2,140.11 km) |
| Mablethorpe to Ruse | 1,335.37 mi (2,149.06 km) |
| Mablethorpe to Samokov | 1,311.31 mi (2,110.35 km) |
| Mablethorpe to Sandanski | 1,338.42 mi (2,153.98 km) |
| Mablethorpe to Sevlievo | 1,338.09 mi (2,153.45 km) |
| Mablethorpe to Shumen | 1,396.95 mi (2,248.18 km) |
| Mablethorpe to Silistra | 1,374.20 mi (2,211.56 km) |
| Mablethorpe to Sliven | 1,400.33 mi (2,253.61 km) |
