| Karhula to Popovo | 1,186.38 mi (1,909.30 km) |
| Karhula to Provadia | 1,197.72 mi (1,927.54 km) |
| Karhula to Radnevo | 1,259.27 mi (2,026.61 km) |
| Karhula to Radomir | 1,252.50 mi (2,015.70 km) |
| Karhula to Rakitovo | 1,286.08 mi (2,069.75 km) |
| Karhula to Rakovski | 1,262.09 mi (2,031.14 km) |
| Karhula to Razgrad | 1,173.49 mi (1,888.54 km) |
| Karhula to Razlog | 1,295.65 mi (2,085.15 km) |
| Karhula to Ruse | 1,154.05 mi (1,857.27 km) |
| Karhula to Samokov | 1,264.01 mi (2,034.23 km) |
| Karhula to Sandanski | 1,318.23 mi (2,121.49 km) |
| Karhula to Sevlievo | 1,210.83 mi (1,948.64 km) |
| Karhula to Shumen | 1,190.63 mi (1,916.13 km) |
| Karhula to Silistra | 1,133.09 mi (1,823.54 km) |
| Karhula to Sliven | 1,232.34 mi (1,983.27 km) |
