| Birsfelden to Zottegem | 286.61 mi (461.25 km) |
| Birsfelden to Zulte | 299.46 mi (481.94 km) |
| Birsfelden to Zwevegem | 296.33 mi (476.89 km) |
| Birsfelden to Zwijndrecht | 293.13 mi (471.74 km) |
| Birsfelden to Asenovgrad | 925.47 mi (1,489.40 km) |
| Birsfelden to Aytos | 1,010.51 mi (1,626.26 km) |
| Birsfelden to Balchik | 1,031.39 mi (1,659.87 km) |
| Birsfelden to Bankya | 825.21 mi (1,328.05 km) |
| Birsfelden to Bansko | 871.33 mi (1,402.26 km) |
| Birsfelden to Berkovitsa | 807.07 mi (1,298.85 km) |
| Birsfelden to Blagoevgrad | 847.58 mi (1,364.05 km) |
| Birsfelden to Botevgrad | 847.77 mi (1,364.36 km) |
| Birsfelden to Burgas | 1,026.60 mi (1,652.15 km) |
| Birsfelden to Byala Slatina | 836.75 mi (1,346.62 km) |
| Birsfelden to Chirpan | 939.57 mi (1,512.09 km) |
