| Portage to Popovo | 5,173.70 mi (8,326.27 km) |
| Portage to Provadia | 5,224.59 mi (8,408.16 km) |
| Portage to Radnevo | 5,213.81 mi (8,390.81 km) |
| Portage to Radomir | 5,092.01 mi (8,194.80 km) |
| Portage to Rakitovo | 5,161.03 mi (8,305.88 km) |
| Portage to Rakovski | 5,179.00 mi (8,334.79 km) |
| Portage to Razgrad | 5,174.92 mi (8,328.23 km) |
| Portage to Razlog | 5,142.81 mi (8,276.55 km) |
| Portage to Ruse | 5,140.83 mi (8,273.37 km) |
| Portage to Samokov | 5,124.59 mi (8,247.23 km) |
| Portage to Sandanski | 5,150.85 mi (8,289.49 km) |
| Portage to Sevlievo | 5,148.97 mi (8,286.47 km) |
| Portage to Shumen | 5,201.93 mi (8,371.70 km) |
| Portage to Silistra | 5,172.77 mi (8,324.76 km) |
| Portage to Sliven | 5,209.68 mi (8,384.16 km) |
