| Schmallenberg to Popovo | 995.47 mi (1,602.05 km) |
| Schmallenberg to Provadia | 1,049.82 mi (1,689.52 km) |
| Schmallenberg to Radnevo | 1,031.28 mi (1,659.69 km) |
| Schmallenberg to Radomir | 909.87 mi (1,464.30 km) |
| Schmallenberg to Rakitovo | 978.35 mi (1,574.51 km) |
| Schmallenberg to Rakovski | 995.67 mi (1,602.37 km) |
| Schmallenberg to Razgrad | 998.68 mi (1,607.22 km) |
| Schmallenberg to Razlog | 961.46 mi (1,547.32 km) |
| Schmallenberg to Ruse | 964.19 mi (1,551.72 km) |
| Schmallenberg to Samokov | 941.97 mi (1,515.96 km) |
| Schmallenberg to Sandanski | 971.08 mi (1,562.81 km) |
| Schmallenberg to Sevlievo | 966.80 mi (1,555.91 km) |
| Schmallenberg to Shumen | 1,025.80 mi (1,650.86 km) |
| Schmallenberg to Silistra | 1,004.12 mi (1,615.98 km) |
| Schmallenberg to Sliven | 1,028.92 mi (1,655.89 km) |
