| Sylvania to Popovo | 5,129.58 mi (8,255.27 km) |
| Sylvania to Provadia | 5,181.29 mi (8,338.48 km) |
| Sylvania to Radnevo | 5,168.17 mi (8,317.37 km) |
| Sylvania to Radomir | 5,044.19 mi (8,117.85 km) |
| Sylvania to Rakitovo | 5,113.46 mi (8,229.32 km) |
| Sylvania to Rakovski | 5,132.53 mi (8,260.01 km) |
| Sylvania to Razgrad | 5,131.26 mi (8,257.97 km) |
| Sylvania to Razlog | 5,094.61 mi (8,198.98 km) |
| Sylvania to Ruse | 5,097.05 mi (8,202.91 km) |
| Sylvania to Samokov | 5,077.01 mi (8,170.66 km) |
| Sylvania to Sandanski | 5,102.12 mi (8,211.06 km) |
| Sylvania to Sevlievo | 5,103.52 mi (8,213.33 km) |
| Sylvania to Shumen | 5,158.32 mi (8,301.52 km) |
| Sylvania to Silistra | 5,130.44 mi (8,256.65 km) |
| Sylvania to Sliven | 5,164.84 mi (8,312.01 km) |
