To elaborate on what Nadeshots said, both the Heroic and Normal categories do not add anything to the speedrun. Easy is the fastest category. Legendary is the hardest category. Heroic and Normal are both just slightly different difficulties that only exist in Halo speedrunning to scatter the runner population and hinder optimization of the speedrun. As a result, they are not tracked on the site and will not be. I suggest running either Easy or Legendary if you want to actually compete with speedrunners here.