| Mountlake Terrace to Devnya | 5,886.51 mi (9,473.42 km) |
| Mountlake Terrace to Dimitrovgrad | 5,927.27 mi (9,539.01 km) |
| Mountlake Terrace to Dobrich | 5,868.25 mi (9,444.04 km) |
| Mountlake Terrace to Dospat | 5,926.07 mi (9,537.09 km) |
| Mountlake Terrace to Dupnitsa | 5,866.40 mi (9,441.05 km) |
| Mountlake Terrace to Elhovo | 5,937.22 mi (9,555.03 km) |
| Mountlake Terrace to Etropole | 5,847.04 mi (9,409.90 km) |
| Mountlake Terrace to Gabrovo | 5,869.72 mi (9,446.41 km) |
| Mountlake Terrace to Gorna Oryahovitsa | 5,859.19 mi (9,429.45 km) |
| Mountlake Terrace to Gotse Delchev | 5,923.03 mi (9,532.20 km) |
| Mountlake Terrace to Harmanli | 5,940.29 mi (9,559.97 km) |
| Mountlake Terrace to Haskovo | 5,934.18 mi (9,550.15 km) |
| Mountlake Terrace to Ihtiman | 5,868.89 mi (9,445.07 km) |
| Mountlake Terrace to Isperih | 5,841.46 mi (9,400.93 km) |
| Mountlake Terrace to Kardzhali | 5,948.75 mi (9,573.59 km) |
