| Grantham to Popovo | 1,392.78 mi (2,241.46 km) |
| Grantham to Provadia | 1,447.63 mi (2,329.74 km) |
| Grantham to Radnevo | 1,426.53 mi (2,295.78 km) |
| Grantham to Radomir | 1,300.07 mi (2,092.26 km) |
| Grantham to Rakitovo | 1,369.37 mi (2,203.79 km) |
| Grantham to Rakovski | 1,389.39 mi (2,236.01 km) |
| Grantham to Razgrad | 1,396.36 mi (2,247.22 km) |
| Grantham to Razlog | 1,350.57 mi (2,173.53 km) |
| Grantham to Ruse | 1,361.85 mi (2,191.68 km) |
| Grantham to Samokov | 1,332.92 mi (2,145.13 km) |
| Grantham to Sandanski | 1,358.47 mi (2,186.24 km) |
| Grantham to Sevlievo | 1,362.48 mi (2,192.70 km) |
| Grantham to Shumen | 1,423.46 mi (2,290.84 km) |
| Grantham to Silistra | 1,402.28 mi (2,256.75 km) |
| Grantham to Sliven | 1,425.36 mi (2,293.89 km) |
