This is one of the fastest routes along Croatia; the road is wide open, great to speed up a bit without getting in to dangerous. Police is almost always present in Gracac city, so be careful. Starting from Plitvice National park, you can stop in Knin and take a look from the old fortres, pass the Perucko Lake and arrive to Sinj. From there you can continue towards Split but the road gets more narrow and slower. A great ride!