| Azcoitia to Popovo | 1,429.13 mi (2,299.97 km) |
| Azcoitia to Provadia | 1,490.59 mi (2,398.87 km) |
| Azcoitia to Radnevo | 1,427.72 mi (2,297.70 km) |
| Azcoitia to Radomir | 1,275.15 mi (2,052.15 km) |
| Azcoitia to Rakitovo | 1,339.75 mi (2,156.12 km) |
| Azcoitia to Rakovski | 1,379.50 mi (2,220.09 km) |
| Azcoitia to Razgrad | 1,441.13 mi (2,319.27 km) |
| Azcoitia to Razlog | 1,310.32 mi (2,108.75 km) |
| Azcoitia to Ruse | 1,410.34 mi (2,269.72 km) |
| Azcoitia to Samokov | 1,308.25 mi (2,105.43 km) |
| Azcoitia to Sandanski | 1,305.98 mi (2,101.77 km) |
| Azcoitia to Sevlievo | 1,377.27 mi (2,216.50 km) |
| Azcoitia to Shumen | 1,464.60 mi (2,357.04 km) |
| Azcoitia to Silistra | 1,471.87 mi (2,368.75 km) |
| Azcoitia to Sliven | 1,442.35 mi (2,321.23 km) |
