I’m pretty sure, I said it more than once: you can cycle for days without having to climb up a hill when cycling along the German north sea-coast. You can either cycle on top of the dike or on the paved roads reserved for cars of the maintenance workers. No air pollution and no traffic (expect a few pedestrians, other bikers or some sheep). It’s really easy and relaxing to cycle here.
Take care!
MyBlog - solaner 