He throws seals and can quickly teleport(or move fast) to them
When you make a shadow clone, it appears right next to you ... RIGHT?
So, why wouldnt you be able to manipulate where the clone is made.
Possible, when you throw the seal on a kunai to mark your path, he makes shadowclones, and uses the seals to create the clone in that area, then he destroys the clone at the same time from where he started... thus a ultra fast movement