| Ibbenburen to Popovo | 1,052.69 mi (1,694.14 km) |
| Ibbenburen to Provadia | 1,105.32 mi (1,778.84 km) |
| Ibbenburen to Radnevo | 1,092.01 mi (1,757.42 km) |
| Ibbenburen to Radomir | 975.63 mi (1,570.13 km) |
| Ibbenburen to Rakitovo | 1,043.30 mi (1,679.04 km) |
| Ibbenburen to Rakovski | 1,058.23 mi (1,703.05 km) |
| Ibbenburen to Razgrad | 1,054.81 mi (1,697.55 km) |
| Ibbenburen to Razlog | 1,027.79 mi (1,654.06 km) |
| Ibbenburen to Ruse | 1,020.47 mi (1,642.30 km) |
| Ibbenburen to Samokov | 1,007.08 mi (1,620.74 km) |
| Ibbenburen to Sandanski | 1,038.43 mi (1,671.20 km) |
| Ibbenburen to Sevlievo | 1,027.11 mi (1,652.97 km) |
| Ibbenburen to Shumen | 1,081.92 mi (1,741.18 km) |
| Ibbenburen to Silistra | 1,056.98 mi (1,701.05 km) |
| Ibbenburen to Sliven | 1,087.88 mi (1,750.78 km) |
