| Kalajoki to Popovo | 1,447.98 mi (2,330.30 km) |
| Kalajoki to Provadia | 1,463.14 mi (2,354.70 km) |
| Kalajoki to Radnevo | 1,519.79 mi (2,445.86 km) |
| Kalajoki to Radomir | 1,501.00 mi (2,415.63 km) |
| Kalajoki to Rakitovo | 1,539.64 mi (2,477.82 km) |
| Kalajoki to Rakovski | 1,519.09 mi (2,444.73 km) |
| Kalajoki to Razgrad | 1,436.07 mi (2,311.13 km) |
| Kalajoki to Razlog | 1,546.66 mi (2,489.11 km) |
| Kalajoki to Ruse | 1,414.69 mi (2,276.72 km) |
| Kalajoki to Samokov | 1,515.27 mi (2,438.59 km) |
| Kalajoki to Sandanski | 1,568.55 mi (2,524.33 km) |
| Kalajoki to Sevlievo | 1,468.33 mi (2,363.05 km) |
| Kalajoki to Shumen | 1,454.54 mi (2,340.86 km) |
| Kalajoki to Silistra | 1,398.16 mi (2,250.12 km) |
| Kalajoki to Sliven | 1,494.24 mi (2,404.74 km) |
