| Portales to Devnya | 6,259.16 mi (10,073.14 km) |
| Portales to Dimitrovgrad | 6,258.06 mi (10,071.37 km) |
| Portales to Dobrich | 6,248.61 mi (10,056.17 km) |
| Portales to Dospat | 6,231.13 mi (10,028.03 km) |
| Portales to Dupnitsa | 6,163.65 mi (9,919.44 km) |
| Portales to Elhovo | 6,283.52 mi (10,112.35 km) |
| Portales to Etropole | 6,163.89 mi (9,919.81 km) |
| Portales to Gabrovo | 6,206.15 mi (9,987.84 km) |
| Portales to Gorna Oryahovitsa | 6,204.00 mi (9,984.37 km) |
| Portales to Gotse Delchev | 6,220.73 mi (10,011.30 km) |
| Portales to Harmanli | 6,274.13 mi (10,097.24 km) |
| Portales to Haskovo | 6,263.13 mi (10,079.53 km) |
| Portales to Ihtiman | 6,178.33 mi (9,943.06 km) |
| Portales to Isperih | 6,209.17 mi (9,992.70 km) |
| Portales to Kardzhali | 6,271.45 mi (10,092.93 km) |
