De or het routebepaling?

The correct Dutch article is:

de routebepaling

Rule Words ending in -ing: almost always de. See the rule

How to use routebepaling

the routebepalingde routebepaling
this routebepalingdeze routebepaling
that routebepalingdie routebepaling
our routebepalingonze routebepaling
your routebepalingjouw routebepaling
every routebepalingelke routebepaling
which routebepaling?welke routebepaling?
a big routebepaling / the big routebepalingeen grote routebepaling, de grote routebepaling