| Kirkland to Popovo | 5,858.98 mi (9,429.11 km) |
| Kirkland to Provadia | 5,890.76 mi (9,480.26 km) |
| Kirkland to Radnevo | 5,921.40 mi (9,529.58 km) |
| Kirkland to Radomir | 5,848.87 mi (9,412.84 km) |
| Kirkland to Rakitovo | 5,907.12 mi (9,506.60 km) |
| Kirkland to Rakovski | 5,904.29 mi (9,502.03 km) |
| Kirkland to Razgrad | 5,852.13 mi (9,418.10 km) |
| Kirkland to Razlog | 5,901.55 mi (9,497.63 km) |
| Kirkland to Ruse | 5,823.45 mi (9,371.94 km) |
| Kirkland to Samokov | 5,874.28 mi (9,453.75 km) |
| Kirkland to Sandanski | 5,918.05 mi (9,524.18 km) |
| Kirkland to Sevlievo | 5,859.62 mi (9,430.14 km) |
| Kirkland to Shumen | 5,875.61 mi (9,455.89 km) |
| Kirkland to Silistra | 5,827.18 mi (9,377.94 km) |
| Kirkland to Sliven | 5,903.86 mi (9,501.34 km) |
