| Portland to Zottegem | 5,049.64 mi (8,126.62 km) |
| Portland to Zulte | 5,037.42 mi (8,106.94 km) |
| Portland to Zwevegem | 5,041.33 mi (8,113.24 km) |
| Portland to Zwijndrecht | 5,043.67 mi (8,117.00 km) |
| Portland to Asenovgrad | 6,065.01 mi (9,760.70 km) |
| Portland to Aytos | 6,065.34 mi (9,761.23 km) |
| Portland to Balchik | 6,034.20 mi (9,711.10 km) |
| Portland to Bankya | 5,987.33 mi (9,635.68 km) |
| Portland to Bansko | 6,049.22 mi (9,735.27 km) |
| Portland to Berkovitsa | 5,953.15 mi (9,580.67 km) |
| Portland to Blagoevgrad | 6,030.14 mi (9,704.57 km) |
| Portland to Botevgrad | 5,987.25 mi (9,635.55 km) |
| Portland to Burgas | 6,082.02 mi (9,788.06 km) |
| Portland to Byala Slatina | 5,954.34 mi (9,582.58 km) |
| Portland to Chirpan | 6,062.06 mi (9,755.94 km) |
