The footprints in the photo are about 23-28 cm long (give or take the "heel"). The animal was probably some 3 to 3,5 meters long. The prints marked with the question marks in the diagram are rather speculative.
Dinosaur tracks stolen with a bulldozer
Dinosaur tracks stolen in Istria using a bulldozer
The paper where some of the Lovrecica tracks were described in 1998:
Fabio M. DALLA VECCHIA: THEROPOD FOOTPRINTS IN THE CRETACEOUS ADRIATIC-DINARIC CARBONATE PLATFORM (ITALY AND CROATIA)
In the comparative drawing above are some of the footprints from the Lovrečica outcrop (the scale bar is 10 cm): the middle one is redrawn from Fabio's paper; the right one is from my photograph in this post.