| Mason City to Borsbeek | 4,273.04 mi (6,876.79 km) |
| Mason City to Boussu | 4,278.73 mi (6,885.95 km) |
| Mason City to Braine-l'Alleud | 4,289.64 mi (6,903.51 km) |
| Mason City to Braine-le-Chateau | 4,285.77 mi (6,897.28 km) |
| Mason City to Braine-le-Comte | 4,284.28 mi (6,894.88 km) |
| Mason City to Brasschaat | 4,269.58 mi (6,871.22 km) |
| Mason City to Brecht | 4,272.42 mi (6,875.80 km) |
| Mason City to Bredene | 4,217.93 mi (6,788.10 km) |
| Mason City to Bree | 4,314.62 mi (6,943.71 km) |
| Mason City to Bruges | 4,227.79 mi (6,803.97 km) |
| Mason City to Brussels | 4,282.36 mi (6,891.80 km) |
| Mason City to Buggenhout | 4,270.86 mi (6,873.28 km) |
| Mason City to Chapelle-lez-Herlaimont | 4,294.96 mi (6,912.07 km) |
| Mason City to Charleroi | 4,303.01 mi (6,925.03 km) |
| Mason City to Chatelet | 4,306.01 mi (6,929.85 km) |
