| Watertown Town to Borsbeek | 3,469.76 mi (5,584.04 km) |
| Watertown Town to Boussu | 3,461.21 mi (5,570.27 km) |
| Watertown Town to Braine-l'Alleud | 3,478.40 mi (5,597.95 km) |
| Watertown Town to Braine-le-Chateau | 3,474.06 mi (5,590.96 km) |
| Watertown Town to Braine-le-Comte | 3,470.74 mi (5,585.62 km) |
| Watertown Town to Brasschaat | 3,467.67 mi (5,580.68 km) |
| Watertown Town to Brecht | 3,472.03 mi (5,587.70 km) |
| Watertown Town to Bredene | 3,407.97 mi (5,484.60 km) |
| Watertown Town to Bree | 3,515.75 mi (5,658.05 km) |
| Watertown Town to Bruges | 3,418.65 mi (5,501.78 km) |
| Watertown Town to Brussels | 3,473.39 mi (5,589.89 km) |
| Watertown Town to Buggenhout | 3,463.34 mi (5,573.71 km) |
| Watertown Town to Chapelle-lez-Herlaimont | 3,480.27 mi (5,600.95 km) |
| Watertown Town to Charleroi | 3,488.11 mi (5,613.58 km) |
| Watertown Town to Chatelet | 3,491.52 mi (5,619.06 km) |
