| Castel Gandolfo to Bagnolet | 698.45 mi (1,124.05 km) |
| Castel Gandolfo to Bagnols-sur-Ceze | 438.88 mi (706.30 km) |
| Castel Gandolfo to Bailleul | 779.89 mi (1,255.11 km) |
| Castel Gandolfo to Balma | 580.49 mi (934.21 km) |
| Castel Gandolfo to Bar-le-Duc | 606.07 mi (975.37 km) |
| Castel Gandolfo to Barentin | 779.06 mi (1,253.78 km) |
| Castel Gandolfo to Basse-Goulaine | 790.23 mi (1,271.75 km) |
| Castel Gandolfo to Bastia | 176.56 mi (284.14 km) |
| Castel Gandolfo to Bayeux | 827.96 mi (1,332.48 km) |
| Castel Gandolfo to Bayonne | 727.63 mi (1,171.00 km) |
| Castel Gandolfo to Beaucaire | 430.16 mi (692.28 km) |
| Castel Gandolfo to Beauchamp | 712.82 mi (1,147.18 km) |
| Castel Gandolfo to Beaumont | 551.41 mi (887.41 km) |
| Castel Gandolfo to Beaumont-sur-Oise | 715.40 mi (1,151.33 km) |
| Castel Gandolfo to Beaune | 530.35 mi (853.51 km) |
