| Swansea to Popovo | 5,515.79 mi (8,876.81 km) |
| Swansea to Provadia | 5,566.68 mi (8,958.71 km) |
| Swansea to Radnevo | 5,555.81 mi (8,941.22 km) |
| Swansea to Radomir | 5,433.73 mi (8,744.74 km) |
| Swansea to Rakitovo | 5,502.80 mi (8,855.89 km) |
| Swansea to Rakovski | 5,520.92 mi (8,885.06 km) |
| Swansea to Razgrad | 5,517.02 mi (8,878.78 km) |
| Swansea to Razlog | 5,484.46 mi (8,826.39 km) |
| Swansea to Ruse | 5,482.92 mi (8,823.91 km) |
| Swansea to Samokov | 5,466.35 mi (8,797.25 km) |
| Swansea to Sandanski | 5,492.39 mi (8,839.15 km) |
| Swansea to Sevlievo | 5,490.99 mi (8,836.90 km) |
| Swansea to Shumen | 5,544.02 mi (8,922.25 km) |
| Swansea to Silistra | 5,514.84 mi (8,875.27 km) |
| Swansea to Sliven | 5,551.74 mi (8,934.66 km) |
