| Rhyl to Popovo | 1,513.70 mi (2,436.06 km) |
| Rhyl to Provadia | 1,568.65 mi (2,524.50 km) |
| Rhyl to Radnevo | 1,547.04 mi (2,489.72 km) |
| Rhyl to Radomir | 1,419.62 mi (2,284.66 km) |
| Rhyl to Rakitovo | 1,489.05 mi (2,396.39 km) |
| Rhyl to Rakovski | 1,509.60 mi (2,429.47 km) |
| Rhyl to Razgrad | 1,517.35 mi (2,441.94 km) |
| Rhyl to Razlog | 1,469.88 mi (2,365.54 km) |
| Rhyl to Ruse | 1,482.84 mi (2,386.40 km) |
| Rhyl to Samokov | 1,452.60 mi (2,337.74 km) |
| Rhyl to Sandanski | 1,477.42 mi (2,377.68 km) |
| Rhyl to Sevlievo | 1,483.08 mi (2,386.79 km) |
| Rhyl to Shumen | 1,544.45 mi (2,485.55 km) |
| Rhyl to Silistra | 1,523.36 mi (2,451.62 km) |
| Rhyl to Sliven | 1,546.11 mi (2,488.22 km) |
