| Illingen to Popovo | 1,001.17 mi (1,611.23 km) |
| Illingen to Provadia | 1,058.83 mi (1,704.02 km) |
| Illingen to Radnevo | 1,028.02 mi (1,654.43 km) |
| Illingen to Radomir | 894.76 mi (1,439.98 km) |
| Illingen to Rakitovo | 964.57 mi (1,552.32 km) |
| Illingen to Rakovski | 988.13 mi (1,590.25 km) |
| Illingen to Razgrad | 1,006.89 mi (1,620.43 km) |
| Illingen to Razlog | 943.98 mi (1,519.18 km) |
| Illingen to Ruse | 972.51 mi (1,565.11 km) |
| Illingen to Samokov | 928.23 mi (1,493.85 km) |
| Illingen to Sandanski | 950.47 mi (1,529.64 km) |
| Illingen to Sevlievo | 965.42 mi (1,553.69 km) |
| Illingen to Shumen | 1,033.69 mi (1,663.56 km) |
| Illingen to Silistra | 1,019.57 mi (1,640.84 km) |
| Illingen to Sliven | 1,030.05 mi (1,657.71 km) |
