| Kirkby to Popovo | 1,493.22 mi (2,403.11 km) |
| Kirkby to Provadia | 1,547.86 mi (2,491.04 km) |
| Kirkby to Radnevo | 1,527.35 mi (2,458.03 km) |
| Kirkby to Radomir | 1,401.03 mi (2,254.75 km) |
| Kirkby to Rakitovo | 1,470.34 mi (2,366.28 km) |
| Kirkby to Rakovski | 1,490.30 mi (2,398.41 km) |
| Kirkby to Razgrad | 1,496.66 mi (2,408.64 km) |
| Kirkby to Razlog | 1,451.52 mi (2,335.99 km) |
| Kirkby to Ruse | 1,462.16 mi (2,353.12 km) |
| Kirkby to Samokov | 1,433.89 mi (2,307.62 km) |
| Kirkby to Sandanski | 1,459.37 mi (2,348.63 km) |
| Kirkby to Sevlievo | 1,463.24 mi (2,354.86 km) |
| Kirkby to Shumen | 1,523.77 mi (2,452.27 km) |
| Kirkby to Silistra | 1,502.06 mi (2,417.34 km) |
| Kirkby to Sliven | 1,526.01 mi (2,455.88 km) |
