De or het judotraining?

The correct Dutch article is:

de judotraining

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

How to use judotraining

the judotrainingde judotraining
this judotrainingdeze judotraining
that judotrainingdie judotraining
our judotrainingonze judotraining
your judotrainingjouw judotraining
every judotrainingelke judotraining
which judotraining?welke judotraining?
a big judotraining / the big judotrainingeen grote judotraining, de grote judotraining