| Seaside to Popovo | 6,558.19 mi (10,554.38 km) |
| Seaside to Provadia | 6,593.96 mi (10,611.95 km) |
| Seaside to Radnevo | 6,617.23 mi (10,649.41 km) |
| Seaside to Radomir | 6,533.70 mi (10,514.97 km) |
| Seaside to Rakitovo | 6,595.05 mi (10,613.71 km) |
| Seaside to Rakovski | 6,596.39 mi (10,615.86 km) |
| Seaside to Razgrad | 6,552.76 mi (10,545.64 km) |
| Seaside to Razlog | 6,586.76 mi (10,600.37 km) |
| Seaside to Ruse | 6,522.66 mi (10,497.21 km) |
| Seaside to Samokov | 6,560.98 mi (10,558.88 km) |
| Seaside to Sandanski | 6,601.72 mi (10,624.45 km) |
| Seaside to Sevlievo | 6,553.97 mi (10,547.59 km) |
| Seaside to Shumen | 6,577.22 mi (10,585.02 km) |
| Seaside to Silistra | 6,531.62 mi (10,511.63 km) |
| Seaside to Sliven | 6,602.02 mi (10,624.92 km) |
