| Nashua to Popovo | 4,614.38 mi (7,426.13 km) |
| Nashua to Provadia | 4,669.06 mi (7,514.13 km) |
| Nashua to Radnevo | 4,646.78 mi (7,478.27 km) |
| Nashua to Radomir | 4,515.00 mi (7,266.19 km) |
| Nashua to Rakitovo | 4,584.86 mi (7,378.62 km) |
| Nashua to Rakovski | 4,608.09 mi (7,416.01 km) |
| Nashua to Razgrad | 4,617.89 mi (7,431.78 km) |
| Nashua to Razlog | 4,563.68 mi (7,344.54 km) |
| Nashua to Ruse | 4,583.39 mi (7,376.26 km) |
| Nashua to Samokov | 4,548.56 mi (7,320.20 km) |
| Nashua to Sandanski | 4,569.13 mi (7,353.30 km) |
| Nashua to Sevlievo | 4,583.20 mi (7,375.95 km) |
| Nashua to Shumen | 4,645.00 mi (7,475.41 km) |
| Nashua to Silistra | 4,622.45 mi (7,439.12 km) |
| Nashua to Sliven | 4,646.60 mi (7,477.98 km) |
