| Dartford to Popovo | 1,329.57 mi (2,139.74 km) |
| Dartford to Provadia | 1,386.12 mi (2,230.75 km) |
| Dartford to Radnevo | 1,359.03 mi (2,187.15 km) |
| Dartford to Radomir | 1,227.35 mi (1,975.22 km) |
| Dartford to Rakitovo | 1,297.10 mi (2,087.49 km) |
| Dartford to Rakovski | 1,319.92 mi (2,124.21 km) |
| Dartford to Razgrad | 1,334.39 mi (2,147.49 km) |
| Dartford to Razlog | 1,276.71 mi (2,054.66 km) |
| Dartford to Ruse | 1,299.89 mi (2,091.97 km) |
| Dartford to Samokov | 1,260.74 mi (2,028.96 km) |
| Dartford to Sandanski | 1,283.23 mi (2,065.16 km) |
| Dartford to Sevlievo | 1,295.88 mi (2,085.52 km) |
| Dartford to Shumen | 1,361.36 mi (2,190.90 km) |
| Dartford to Silistra | 1,343.95 mi (2,162.89 km) |
| Dartford to Sliven | 1,359.96 mi (2,188.64 km) |
