| Etterbeek to Provadia | 1,201.00 mi (1,932.82 km) |
| Etterbeek to Radnevo | 1,174.98 mi (1,890.94 km) |
| Etterbeek to Radomir | 1,045.14 mi (1,681.99 km) |
| Etterbeek to Rakitovo | 1,114.73 mi (1,793.98 km) |
| Etterbeek to Rakovski | 1,136.46 mi (1,828.95 km) |
| Etterbeek to Razgrad | 1,149.30 mi (1,849.61 km) |
| Etterbeek to Razlog | 1,095.08 mi (1,762.36 km) |
| Etterbeek to Ruse | 1,114.79 mi (1,794.08 km) |
| Etterbeek to Samokov | 1,078.31 mi (1,735.37 km) |
| Etterbeek to Sandanski | 1,102.35 mi (1,774.06 km) |
| Etterbeek to Sevlievo | 1,111.57 mi (1,788.89 km) |
| Etterbeek to Shumen | 1,176.29 mi (1,893.06 km) |
| Etterbeek to Silistra | 1,158.68 mi (1,864.72 km) |
| Etterbeek to Sliven | 1,175.40 mi (1,891.62 km) |
| Etterbeek to Smolyan | 1,156.83 mi (1,861.74 km) |
