| Wetzlar to Popovo | 969.99 mi (1,561.05 km) |
| Wetzlar to Provadia | 1,025.26 mi (1,649.99 km) |
| Wetzlar to Radnevo | 1,003.71 mi (1,615.32 km) |
| Wetzlar to Radomir | 879.46 mi (1,415.35 km) |
| Wetzlar to Rakitovo | 948.34 mi (1,526.20 km) |
| Wetzlar to Rakovski | 967.06 mi (1,556.34 km) |
| Wetzlar to Razgrad | 973.83 mi (1,567.23 km) |
| Wetzlar to Razlog | 930.63 mi (1,497.71 km) |
| Wetzlar to Ruse | 939.31 mi (1,511.68 km) |
| Wetzlar to Samokov | 911.91 mi (1,467.57 km) |
| Wetzlar to Sandanski | 939.63 mi (1,512.19 km) |
| Wetzlar to Sevlievo | 939.56 mi (1,512.08 km) |
| Wetzlar to Shumen | 1,000.92 mi (1,610.82 km) |
| Wetzlar to Silistra | 981.15 mi (1,579.01 km) |
| Wetzlar to Sliven | 1,002.38 mi (1,613.18 km) |
