| Morriston to Popovo | 1,507.35 mi (2,425.84 km) |
| Morriston to Provadia | 1,564.26 mi (2,517.44 km) |
| Morriston to Radnevo | 1,535.44 mi (2,471.06 km) |
| Morriston to Radomir | 1,401.65 mi (2,255.74 km) |
| Morriston to Rakitovo | 1,471.53 mi (2,368.20 km) |
| Morriston to Rakovski | 1,495.61 mi (2,406.94 km) |
| Morriston to Razgrad | 1,512.45 mi (2,434.06 km) |
| Morriston to Razlog | 1,450.34 mi (2,334.09 km) |
| Morriston to Ruse | 1,477.98 mi (2,378.58 km) |
| Morriston to Samokov | 1,435.26 mi (2,309.84 km) |
| Morriston to Sandanski | 1,456.06 mi (2,343.31 km) |
| Morriston to Sevlievo | 1,472.67 mi (2,370.03 km) |
| Morriston to Shumen | 1,539.38 mi (2,477.40 km) |
| Morriston to Silistra | 1,522.71 mi (2,450.56 km) |
| Morriston to Sliven | 1,537.08 mi (2,473.69 km) |
