Croatia in 4 days

Friday 8.4.
Bologna -> Zagreb (lunch in Padua)
520 km / 5h 30min

Saturday 9.4.
Zagreb area and evening in Zagreb (social event)
Morning: Zagreb
Before noon: Samobor, Japetić hill, someplace around Zagreb maybe
Afternoon and evening: Zagreb

Sunday 10.4.
Tour with local bikers
Morning: Zagreb (start 9:00)
Zagreb -> Željava is 130 km
Around noon: Željava (spend 2 hours, maybe less)
Željava -> Plitvice is 20 km
Afternoon: Plitvice lakes (up to 3 hours)
Plitvice -> Smiljan is 60 km
Early evening: arrive at Smiljan/Gospić

Monday 11.4.
220 km / easy from morning to early evening
Morning: Tesla museum
Before lunch: Velebit offroad (or local roads)
Lunch on the road (maybe in Senj)
Afternoon: Učka mountain panorama view
Early evening: Pula (evening sightseeing)

Tuesday 12.4.
Pula -> Bologna
450 km / 5h 30min drive
Morning: visit the Arena (30 minutes)
After 30 minutes: short stop in Rovinj (30 min / 1 hour)
Drive by Motovun
After 1 hour: short stop in Grožnjan (30 min / 1 hour)
Lunch: somewhere before Croatia/Slovenia border
Highway: 3 hours, maybe 4 hours
Evening: Bologna

Wednesday 13.4.