| Mason City to Brie-Comte-Robert | 4,303.95 mi (6,926.54 km) |
| Mason City to Brignais | 4,508.17 mi (7,255.20 km) |
| Mason City to Brignoles | 4,655.41 mi (7,492.15 km) |
| Mason City to Brive-la-Gaillarde | 4,403.85 mi (7,087.31 km) |
| Mason City to Bron | 4,511.56 mi (7,260.65 km) |
| Mason City to Bruay-sur-l'Escaut | 4,270.82 mi (6,873.22 km) |
| Mason City to Bruges | 4,329.43 mi (6,967.54 km) |
| Mason City to Brumath | 4,489.51 mi (7,225.17 km) |
| Mason City to Brunoy | 4,299.75 mi (6,919.78 km) |
| Mason City to Bruz | 4,163.64 mi (6,700.72 km) |
| Mason City to Bry-sur-Marne | 4,294.76 mi (6,911.75 km) |
| Mason City to Bully-les-Mines | 4,239.53 mi (6,822.87 km) |
| Mason City to Bures-sur-Yvette | 4,286.95 mi (6,899.17 km) |
| Mason City to Bussy-Saint-Georges | 4,301.29 mi (6,922.25 km) |
| Mason City to Buxerolles | 4,300.01 mi (6,920.20 km) |
