| Mason City to Bagnolet | 4,289.77 mi (6,903.71 km) |
| Mason City to Bagnols-sur-Ceze | 4,566.57 mi (7,349.18 km) |
| Mason City to Bailleul | 4,228.41 mi (6,804.97 km) |
| Mason City to Balma | 4,465.57 mi (7,186.63 km) |
| Mason City to Bar-le-Duc | 4,395.45 mi (7,073.80 km) |
| Mason City to Barentin | 4,208.87 mi (6,773.52 km) |
| Mason City to Basse-Goulaine | 4,205.13 mi (6,767.50 km) |
| Mason City to Bastia | 4,818.16 mi (7,754.08 km) |
| Mason City to Bayeux | 4,156.60 mi (6,689.41 km) |
| Mason City to Bayonne | 4,349.32 mi (6,999.56 km) |
| Mason City to Beaucaire | 4,582.53 mi (7,374.88 km) |
| Mason City to Beauchamp | 4,275.57 mi (6,880.86 km) |
| Mason City to Beaumont | 4,440.42 mi (7,146.17 km) |
| Mason City to Beaumont-sur-Oise | 4,274.12 mi (6,878.53 km) |
| Mason City to Beaune | 4,455.18 mi (7,169.91 km) |
