| Washougal to Popovo | 5,996.58 mi (9,650.56 km) |
| Washougal to Provadia | 6,029.01 mi (9,702.75 km) |
| Washougal to Radnevo | 6,058.49 mi (9,750.20 km) |
| Washougal to Radomir | 5,984.15 mi (9,630.55 km) |
| Washougal to Rakitovo | 6,042.94 mi (9,725.16 km) |
| Washougal to Rakovski | 6,040.77 mi (9,721.68 km) |
| Washougal to Razgrad | 5,989.96 mi (9,639.91 km) |
| Washougal to Razlog | 6,036.92 mi (9,715.48 km) |
| Washougal to Ruse | 5,961.04 mi (9,593.37 km) |
| Washougal to Samokov | 6,009.88 mi (9,671.97 km) |
| Washougal to Sandanski | 6,053.18 mi (9,741.65 km) |
| Washougal to Sevlievo | 5,996.44 mi (9,650.34 km) |
| Washougal to Shumen | 6,013.61 mi (9,677.96 km) |
| Washougal to Silistra | 5,965.60 mi (9,600.70 km) |
| Washougal to Sliven | 6,041.31 mi (9,722.55 km) |
