| Nairn to Popovo | 1,627.06 mi (2,618.50 km) |
| Nairn to Provadia | 1,676.33 mi (2,697.79 km) |
| Nairn to Radnevo | 1,671.41 mi (2,689.87 km) |
| Nairn to Radomir | 1,560.71 mi (2,511.73 km) |
| Nairn to Rakitovo | 1,627.61 mi (2,619.38 km) |
| Nairn to Rakovski | 1,640.06 mi (2,639.41 km) |
| Nairn to Razgrad | 1,627.33 mi (2,618.93 km) |
| Nairn to Razlog | 1,613.19 mi (2,596.19 km) |
| Nairn to Ruse | 1,593.53 mi (2,564.54 km) |
| Nairn to Samokov | 1,591.59 mi (2,561.42 km) |
| Nairn to Sandanski | 1,624.46 mi (2,614.32 km) |
| Nairn to Sevlievo | 1,606.24 mi (2,584.99 km) |
| Nairn to Shumen | 1,654.20 mi (2,662.18 km) |
| Nairn to Silistra | 1,623.48 mi (2,612.73 km) |
| Nairn to Sliven | 1,664.76 mi (2,679.17 km) |
