| Biggleswade to Popovo | 1,360.90 mi (2,190.15 km) |
| Biggleswade to Provadia | 1,416.74 mi (2,280.03 km) |
| Biggleswade to Radnevo | 1,392.23 mi (2,240.57 km) |
| Biggleswade to Radomir | 1,262.72 mi (2,032.15 km) |
| Biggleswade to Rakitovo | 1,332.31 mi (2,144.15 km) |
| Biggleswade to Rakovski | 1,353.94 mi (2,178.96 km) |
| Biggleswade to Razgrad | 1,365.18 mi (2,197.04 km) |
| Biggleswade to Razlog | 1,312.59 mi (2,112.41 km) |
| Biggleswade to Ruse | 1,330.66 mi (2,141.49 km) |
| Biggleswade to Samokov | 1,295.90 mi (2,085.54 km) |
| Biggleswade to Sandanski | 1,319.70 mi (2,123.86 km) |
| Biggleswade to Sevlievo | 1,328.65 mi (2,138.26 km) |
| Biggleswade to Shumen | 1,392.22 mi (2,240.57 km) |
| Biggleswade to Silistra | 1,373.17 mi (2,209.90 km) |
| Biggleswade to Sliven | 1,392.25 mi (2,240.60 km) |
