| Mason City to Beuvry | 4,234.87 mi (6,815.37 km) |
| Mason City to Beziers | 4,545.45 mi (7,315.19 km) |
| Mason City to Bezons | 4,280.05 mi (6,888.07 km) |
| Mason City to Biarritz | 4,346.43 mi (6,994.91 km) |
| Mason City to Biganos | 4,324.11 mi (6,958.98 km) |
| Mason City to Billere | 4,401.16 mi (7,082.99 km) |
| Mason City to Biot | 4,686.01 mi (7,541.41 km) |
| Mason City to Biscarrosse | 4,326.50 mi (6,962.83 km) |
| Mason City to Bischheim | 4,496.08 mi (7,235.74 km) |
| Mason City to Bischwiller | 4,493.40 mi (7,231.43 km) |
| Mason City to Blagnac | 4,460.15 mi (7,177.91 km) |
| Mason City to Blain | 4,183.58 mi (6,732.82 km) |
| Mason City to Blanquefort | 4,327.32 mi (6,964.15 km) |
| Mason City to Blois | 4,298.73 mi (6,918.14 km) |
| Mason City to Bobigny | 4,288.94 mi (6,902.39 km) |
