| Middlesbrough to Popovo | 1,453.53 mi (2,339.22 km) |
| Middlesbrough to Provadia | 1,506.27 mi (2,424.11 km) |
| Middlesbrough to Radnevo | 1,491.82 mi (2,400.86 km) |
| Middlesbrough to Radomir | 1,371.67 mi (2,207.48 km) |
| Middlesbrough to Rakitovo | 1,440.15 mi (2,317.70 km) |
| Middlesbrough to Rakovski | 1,457.00 mi (2,344.82 km) |
| Middlesbrough to Razgrad | 1,455.75 mi (2,342.80 km) |
| Middlesbrough to Razlog | 1,423.18 mi (2,290.39 km) |
| Middlesbrough to Ruse | 1,421.40 mi (2,287.52 km) |
| Middlesbrough to Samokov | 1,403.77 mi (2,259.15 km) |
| Middlesbrough to Sandanski | 1,432.57 mi (2,305.49 km) |
| Middlesbrough to Sevlievo | 1,427.08 mi (2,296.66 km) |
| Middlesbrough to Shumen | 1,482.86 mi (2,386.43 km) |
| Middlesbrough to Silistra | 1,457.68 mi (2,345.90 km) |
| Middlesbrough to Sliven | 1,488.35 mi (2,395.27 km) |
