| Donostia to Bahcesaray | 2,343.95 mi (3,772.23 km) |
| Donostia to Balikesir | 1,558.20 mi (2,507.68 km) |
| Donostia to Balya | 1,540.49 mi (2,479.18 km) |
| Donostia to Banaz | 1,673.48 mi (2,693.20 km) |
| Donostia to Bandirma | 1,546.80 mi (2,489.34 km) |
| Donostia to Bartin | 1,740.35 mi (2,800.82 km) |
| Donostia to Baskale | 2,406.42 mi (3,872.76 km) |
| Donostia to Baskil | 2,133.03 mi (3,432.78 km) |
| Donostia to Basmakci | 1,708.06 mi (2,748.86 km) |
| Donostia to Batman | 2,266.83 mi (3,648.11 km) |
| Donostia to Battalgazi | 2,113.95 mi (3,402.08 km) |
| Donostia to Bayat | 1,855.81 mi (2,986.64 km) |
| Donostia to Bayburt | 2,161.40 mi (3,478.44 km) |
| Donostia to Bayindir | 1,581.01 mi (2,544.38 km) |
| Donostia to Baykan | 2,291.91 mi (3,688.48 km) |
