| Ilkley to Popovo | 1,460.65 mi (2,350.69 km) |
| Ilkley to Provadia | 1,514.46 mi (2,437.29 km) |
| Ilkley to Radnevo | 1,496.70 mi (2,408.70 km) |
| Ilkley to Radomir | 1,373.18 mi (2,209.92 km) |
| Ilkley to Rakitovo | 1,442.14 mi (2,320.90 km) |
| Ilkley to Rakovski | 1,460.66 mi (2,350.71 km) |
| Ilkley to Razgrad | 1,463.54 mi (2,355.34 km) |
| Ilkley to Razlog | 1,424.18 mi (2,292.00 km) |
| Ilkley to Ruse | 1,429.09 mi (2,299.89 km) |
| Ilkley to Samokov | 1,405.70 mi (2,262.26 km) |
| Ilkley to Sandanski | 1,432.77 mi (2,305.81 km) |
| Ilkley to Sevlievo | 1,432.27 mi (2,305.01 km) |
| Ilkley to Shumen | 1,490.66 mi (2,398.99 km) |
| Ilkley to Silistra | 1,467.38 mi (2,361.53 km) |
| Ilkley to Sliven | 1,494.38 mi (2,404.98 km) |
