| Portales to Popovo | 6,209.67 mi (9,993.50 km) |
| Portales to Provadia | 6,256.75 mi (10,069.27 km) |
| Portales to Radnevo | 6,255.77 mi (10,067.68 km) |
| Portales to Radomir | 6,143.24 mi (9,886.58 km) |
| Portales to Rakitovo | 6,210.94 mi (9,995.54 km) |
| Portales to Rakovski | 6,224.49 mi (10,017.35 km) |
| Portales to Razgrad | 6,208.95 mi (9,992.34 km) |
| Portales to Razlog | 6,195.23 mi (9,970.26 km) |
| Portales to Ruse | 6,175.59 mi (9,938.65 km) |
| Portales to Samokov | 6,174.73 mi (9,937.28 km) |
| Portales to Sandanski | 6,205.23 mi (9,986.35 km) |
| Portales to Sevlievo | 6,190.58 mi (9,962.78 km) |
| Portales to Shumen | 6,235.56 mi (10,035.16 km) |
| Portales to Silistra | 6,201.08 mi (9,979.68 km) |
| Portales to Sliven | 6,248.40 mi (10,055.82 km) |
