| Hennef to Popovo | 1,024.83 mi (1,649.30 km) |
| Hennef to Provadia | 1,080.27 mi (1,738.53 km) |
| Hennef to Radnevo | 1,057.94 mi (1,702.59 km) |
| Hennef to Radomir | 932.43 mi (1,500.61 km) |
| Hennef to Rakitovo | 1,001.51 mi (1,611.77 km) |
| Hennef to Rakovski | 1,020.90 mi (1,642.98 km) |
| Hennef to Razgrad | 1,028.80 mi (1,655.69 km) |
| Hennef to Razlog | 983.35 mi (1,582.55 km) |
| Hennef to Ruse | 994.28 mi (1,600.14 km) |
| Hennef to Samokov | 965.06 mi (1,553.12 km) |
| Hennef to Sandanski | 991.94 mi (1,596.37 km) |
| Hennef to Sevlievo | 993.92 mi (1,599.56 km) |
| Hennef to Shumen | 1,055.87 mi (1,699.26 km) |
| Hennef to Silistra | 1,036.38 mi (1,667.89 km) |
| Hennef to Sliven | 1,056.94 mi (1,700.99 km) |
