| North Hykeham to Popovo | 1,396.40 mi (2,247.30 km) |
| North Hykeham to Provadia | 1,450.90 mi (2,334.99 km) |
| North Hykeham to Radnevo | 1,431.02 mi (2,303.00 km) |
| North Hykeham to Radomir | 1,305.71 mi (2,101.34 km) |
| North Hykeham to Rakitovo | 1,374.88 mi (2,212.65 km) |
| North Hykeham to Rakovski | 1,394.30 mi (2,243.91 km) |
| North Hykeham to Razgrad | 1,399.74 mi (2,252.66 km) |
| North Hykeham to Razlog | 1,356.43 mi (2,182.96 km) |
| North Hykeham to Ruse | 1,365.24 mi (2,197.15 km) |
| North Hykeham to Samokov | 1,338.43 mi (2,154.00 km) |
| North Hykeham to Sandanski | 1,364.62 mi (2,196.14 km) |
| North Hykeham to Sevlievo | 1,366.81 mi (2,199.67 km) |
| North Hykeham to Shumen | 1,426.85 mi (2,296.30 km) |
| North Hykeham to Silistra | 1,404.94 mi (2,261.03 km) |
| North Hykeham to Sliven | 1,429.41 mi (2,300.42 km) |
