| Mason City to Ayr | 3,799.78 mi (6,115.15 km) |
| Mason City to Bacup | 3,942.96 mi (6,345.58 km) |
| Mason City to Baguley | 3,950.66 mi (6,357.97 km) |
| Mason City to Baildon | 3,953.38 mi (6,362.35 km) |
| Mason City to Bailleston | 3,805.36 mi (6,124.14 km) |
| Mason City to Balderton | 4,016.33 mi (6,463.66 km) |
| Mason City to Baldock | 4,075.51 mi (6,558.90 km) |
| Mason City to Balham | 4,096.85 mi (6,593.24 km) |
| Mason City to Bamber Bridge | 3,925.71 mi (6,317.82 km) |
| Mason City to Banbridge | 3,776.85 mi (6,078.25 km) |
| Mason City to Banbury | 4,031.38 mi (6,487.87 km) |
| Mason City to Bangor | 3,788.09 mi (6,096.35 km) |
| Mason City to Bangor | 3,889.73 mi (6,259.91 km) |
| Mason City to Banstead | 4,099.42 mi (6,597.38 km) |
| Mason City to Bargoed | 3,974.51 mi (6,396.36 km) |
