| Troutdale to Karlovo | 6,018.84 mi (9,686.39 km) |
| Troutdale to Karnobat | 6,060.27 mi (9,753.05 km) |
| Troutdale to Kavarna | 6,032.35 mi (9,708.13 km) |
| Troutdale to Kazanlak | 6,031.92 mi (9,707.44 km) |
| Troutdale to Knezha | 5,950.18 mi (9,575.89 km) |
| Troutdale to Kostinbrod | 5,976.49 mi (9,618.23 km) |
| Troutdale to Kozloduy | 5,925.34 mi (9,535.91 km) |
| Troutdale to Kyustendil | 5,999.45 mi (9,655.19 km) |
| Troutdale to Levski | 5,978.83 mi (9,622.00 km) |
| Troutdale to Lom | 5,912.91 mi (9,515.91 km) |
| Troutdale to Lovech | 5,985.73 mi (9,633.10 km) |
| Troutdale to Lukovit | 5,970.91 mi (9,609.26 km) |
| Troutdale to Lyaskovets | 6,006.89 mi (9,667.16 km) |
| Troutdale to Mezdra | 5,964.95 mi (9,599.65 km) |
| Troutdale to Momchilgrad | 6,101.68 mi (9,819.70 km) |
