| Mason City to Beocin | 5,074.48 mi (8,166.58 km) |
| Mason City to Blace | 5,222.78 mi (8,405.26 km) |
| Mason City to Bogatic | 5,083.97 mi (8,181.87 km) |
| Mason City to Bojnik | 5,251.65 mi (8,451.72 km) |
| Mason City to Boljevac | 5,218.70 mi (8,398.69 km) |
| Mason City to Bor | 5,208.40 mi (8,382.11 km) |
| Mason City to Borca | 5,115.23 mi (8,232.17 km) |
| Mason City to Bosilegrad | 5,303.71 mi (8,535.49 km) |
| Mason City to Brus | 5,209.45 mi (8,383.80 km) |
| Mason City to Bujanovac | 5,281.03 mi (8,499.00 km) |
| Mason City to Cacak | 5,160.46 mi (8,304.95 km) |
| Mason City to Cajetina | 5,145.53 mi (8,280.93 km) |
| Mason City to Cicevac | 5,207.03 mi (8,379.90 km) |
| Mason City to Coka | 5,052.44 mi (8,131.11 km) |
| Mason City to Crna Trava | 5,281.98 mi (8,500.53 km) |
