De or het touroverwinning?

The correct Dutch article is:

de touroverwinning

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

How to use touroverwinning

the touroverwinningde touroverwinning
this touroverwinningdeze touroverwinning
that touroverwinningdie touroverwinning
our touroverwinningonze touroverwinning
your touroverwinningjouw touroverwinning
every touroverwinningelke touroverwinning
which touroverwinning?welke touroverwinning?
a big touroverwinning / the big touroverwinningeen grote touroverwinning, de grote touroverwinning