| Gummersbach to Popovo | 1,020.35 mi (1,642.10 km) |
| Gummersbach to Provadia | 1,075.26 mi (1,730.46 km) |
| Gummersbach to Radnevo | 1,054.81 mi (1,697.55 km) |
| Gummersbach to Radomir | 931.22 mi (1,498.65 km) |
| Gummersbach to Rakitovo | 1,000.03 mi (1,609.40 km) |
| Gummersbach to Rakovski | 1,018.44 mi (1,639.03 km) |
| Gummersbach to Razgrad | 1,023.94 mi (1,647.88 km) |
| Gummersbach to Razlog | 982.46 mi (1,581.11 km) |
| Gummersbach to Ruse | 989.43 mi (1,592.33 km) |
| Gummersbach to Samokov | 963.61 mi (1,550.77 km) |
| Gummersbach to Sandanski | 991.53 mi (1,595.71 km) |
| Gummersbach to Sevlievo | 990.54 mi (1,594.13 km) |
| Gummersbach to Shumen | 1,051.04 mi (1,691.49 km) |
| Gummersbach to Silistra | 1,030.43 mi (1,658.31 km) |
| Gummersbach to Sliven | 1,053.14 mi (1,694.86 km) |
