| Difficult Run to Bilecik | 5,309.05 mi (8,544.09 km) |
| Difficult Run to Bingol | 5,777.05 mi (9,297.27 km) |
| Difficult Run to Birecik | 5,772.53 mi (9,289.99 km) |
| Difficult Run to Bitlis | 5,860.99 mi (9,432.35 km) |
| Difficult Run to Bodrum | 5,340.79 mi (8,595.17 km) |
| Difficult Run to Bogazliyan | 5,561.68 mi (8,950.66 km) |
| Difficult Run to Bolu | 5,347.38 mi (8,605.77 km) |
| Difficult Run to Bolvadin | 5,416.62 mi (8,717.21 km) |
| Difficult Run to Bor | 5,596.77 mi (9,007.13 km) |
| Difficult Run to Borcka | 5,695.94 mi (9,166.74 km) |
| Difficult Run to Boyabat | 5,436.38 mi (8,749.01 km) |
| Difficult Run to Bozdogan | 5,350.22 mi (8,610.35 km) |
| Difficult Run to Bozkir | 5,535.36 mi (8,908.31 km) |
| Difficult Run to Bozkurt | 5,398.36 mi (8,687.81 km) |
| Difficult Run to Bozuyuk | 5,321.89 mi (8,564.75 km) |
