| Adrian to Popovo | 5,132.62 mi (8,260.15 km) |
| Adrian to Provadia | 5,184.14 mi (8,343.06 km) |
| Adrian to Radnevo | 5,171.56 mi (8,322.83 km) |
| Adrian to Radomir | 5,048.09 mi (8,124.12 km) |
| Adrian to Rakitovo | 5,117.30 mi (8,235.51 km) |
| Adrian to Rakovski | 5,136.12 mi (8,265.78 km) |
| Adrian to Razgrad | 5,134.19 mi (8,262.69 km) |
| Adrian to Razlog | 5,098.60 mi (8,205.40 km) |
| Adrian to Ruse | 5,100.00 mi (8,207.66 km) |
| Adrian to Samokov | 5,080.86 mi (8,176.85 km) |
| Adrian to Sandanski | 5,106.23 mi (8,217.69 km) |
| Adrian to Sevlievo | 5,106.87 mi (8,218.71 km) |
| Adrian to Shumen | 5,161.24 mi (8,306.22 km) |
| Adrian to Silistra | 5,133.06 mi (8,260.87 km) |
| Adrian to Sliven | 5,168.05 mi (8,317.17 km) |
