Along the track to Skagen you find several cafés and kiosks where you are able to get carbohydrates and drinks.
This is a picture from a café in Aalbaek. Half the way between Frederikshavn and Skagen.
You also got a kiosk near the sand covered Church. The kiosk is open between 10-16 bankdays. The adress is Gamle Landevej 63 about 500 meters from the church.