| Marlborough to Popovo | 4,633.78 mi (7,457.35 km) |
| Marlborough to Provadia | 4,688.61 mi (7,545.59 km) |
| Marlborough to Radnevo | 4,665.81 mi (7,508.89 km) |
| Marlborough to Radomir | 4,533.59 mi (7,296.11 km) |
| Marlborough to Rakitovo | 4,603.47 mi (7,408.57 km) |
| Marlborough to Rakovski | 4,626.95 mi (7,446.36 km) |
| Marlborough to Razgrad | 4,637.39 mi (7,463.16 km) |
| Marlborough to Razlog | 4,582.15 mi (7,374.26 km) |
| Marlborough to Ruse | 4,602.88 mi (7,407.62 km) |
| Marlborough to Samokov | 4,567.19 mi (7,350.18 km) |
| Marlborough to Sandanski | 4,587.47 mi (7,382.81 km) |
| Marlborough to Sevlievo | 4,602.31 mi (7,406.70 km) |
| Marlborough to Shumen | 4,664.50 mi (7,506.78 km) |
| Marlborough to Silistra | 4,642.24 mi (7,470.97 km) |
| Marlborough to Sliven | 4,665.81 mi (7,508.90 km) |
