The distance may not be too far and it is still possible to catch up, but if you look at the remaining matches, it may be much more difficult for Atalanta to compete for the title with Inter Milan and Napoli. The five matches will be a little more difficult because Atalanta will face a much more balanced team so anything is still possible.
If they fail to win the five matches, their chances will be much more difficult and in the remaining matches this season it will be much more impossible for Atalanta to fight for the trophy.
Their adventure in Serie A continues and they have no way than fighting for as best results as possible. Because they must achieve as most points as possible, not only to chase Napoli and Inter Milan, but also to secure their position in top four. They have good difference against Juventus and clubs beyond top four but there are enough matches for big changes, and there is no reserved slot in top four for Atalanta.
They have to fight and solve remaining matches, match by match, and see that how far they can go and finish in this season. Even they won't win Scudetto, this season will be a helpful experience for them, and remember that Napoli had many similar seasons of competing for Scudetto and failing to take it, before winning it three seasons ago.