| Duncan to Benisa | 5,154.77 mi (8,295.80 km) |
| Duncan to Berga | 5,109.58 mi (8,223.08 km) |
| Duncan to Berja | 5,083.21 mi (8,180.64 km) |
| Duncan to Bermeo | 4,863.78 mi (7,827.50 km) |
| Duncan to Berriozar | 4,930.00 mi (7,934.07 km) |
| Duncan to Betanzos | 4,624.95 mi (7,443.14 km) |
| Duncan to Betera | 5,099.24 mi (8,206.44 km) |
| Duncan to Bilbao | 4,860.69 mi (7,822.52 km) |
| Duncan to Binefar | 5,051.37 mi (8,129.40 km) |
| Duncan to Binisalem | 5,243.62 mi (8,438.79 km) |
| Duncan to Blanes | 5,166.45 mi (8,314.60 km) |
| Duncan to Boadilla del Monte | 4,915.24 mi (7,910.32 km) |
| Duncan to Boiro | 4,613.05 mi (7,423.99 km) |
| Duncan to Bolanos de Calatrava | 4,975.18 mi (8,006.78 km) |
| Duncan to Bollullos de la Mitacion | 4,914.63 mi (7,909.34 km) |
