The route via Cupecoy has drawbacks also. At night, don't use it, there have been car jackings there.

In the day time you can get stuck. After Baie Nettlé the only place you can overtake is Baie Rouge and if you get stuck behind a tourist van driving at 20km/h and stopping every mile to take pictures, it will take you longer.

The main obstacle in Marigot can be avoided. Once you turn off Rue de Hollande, don't follow the road left, go straight. Turn left, follow the road around the town hall. Hit the road at the Post office on the left and drive up the main crossing, turn left again on you are on your way to Bellevue and the Causeway.

Alternatly you can also take the road from Gallisbay to Cupecoy and turn back into Marigot ar the end of the seafront part of the road.

Beware of the Causeway opening times, it does take a long time to open and close.