| Sint Willebrord to Popovo | 1,152.78 mi (1,855.21 km) |
| Sint Willebrord to Provadia | 1,208.04 mi (1,944.15 km) |
| Sint Willebrord to Radnevo | 1,186.01 mi (1,908.69 km) |
| Sint Willebrord to Radomir | 1,059.89 mi (1,705.73 km) |
| Sint Willebrord to Rakitovo | 1,129.09 mi (1,817.09 km) |
| Sint Willebrord to Rakovski | 1,148.85 mi (1,848.89 km) |
| Sint Willebrord to Razgrad | 1,156.63 mi (1,861.41 km) |
| Sint Willebrord to Razlog | 1,110.59 mi (1,787.33 km) |
| Sint Willebrord to Ruse | 1,122.11 mi (1,805.86 km) |
| Sint Willebrord to Samokov | 1,092.64 mi (1,758.43 km) |
| Sint Willebrord to Sandanski | 1,118.84 mi (1,800.60 km) |
| Sint Willebrord to Sevlievo | 1,122.00 mi (1,805.68 km) |
| Sint Willebrord to Shumen | 1,183.71 mi (1,905.00 km) |
| Sint Willebrord to Silistra | 1,163.64 mi (1,872.70 km) |
| Sint Willebrord to Sliven | 1,185.01 mi (1,907.09 km) |
