Ahead of a major music event in Zagreb on July 4-6, 2025, the Croatian Tourist Board and the Croatian Ministry of Tourism and Sports are urging travelers to avoid car traffic in and around the capital during these dates. 

The concert, which takes place on Saturday, July 5, is expected to attract up to 500,000 visitors. At the same time, this weekend marks the beginning of the first major holiday weekend in July, which is expected to further burden the roads in and around Zagreb. 

To make travel easier, the Croatian Automobile Club HAK (Hrvatski autoklub) has published recommended alternative routes to Croatian tourist destinations on its official website. 

 Recommended alternative routes to the Adriatic coast: 

From Austria/Slovenia to Kvarner and eastern/southern Istria: 
Graz/Villach – Ljubljana – Postojna – Rupa (entrance to HR) – Rijeka (via motorway A7/E61) – on to Opatija, Crikvenica, Senj, as well as the islands of Krk, Cres, Lošinj, Rab or towns in Istria (Pazin, Rabac, Labin). This route can also connect to motorway A6/E61 and further via A1/E65 towards Zadar, Šibenik, Split and Dubrovnik. 

From Austria/Slovenia to northern and western Istria: 
Graz/Villach – Ljubljana – Postojna – Koper – Kaštel (entrance to HR) – Umag – Poreč – Rovinj – Pula, 
or via Ljubljana – Postojna – Kozina – Starod – Pasjak D8 (entrance to HR) – then on to Kvarner and the islands. Possible to continue via A9/E751 (incl. Učka exit) or D66 towards Pula, Labin, Opatija and Rijeka. 

From Serbia to Istria and the northern coast: 
Bajakovo – Slavonski Brod – Nova Gradiška – Popovača (exit from A3/E70) – Sisak – Petrinja – Glina – Gvozd – Vojnić – Karlovac – then further towards Rijeka (A6) or the south coast (A1/E65). 
Alternatively, via state road D1 through Lika (Slunj). 

From Serbia to the southern coast: 
Bajakovo - highway A3/E70 to Babina Greda/Slavonski Brod/Nova Gradiška - then via Bosnia and Herzegovina with border crossing at Slavonski Šamac, Svilaj, Stara Gradiška or Slavonski Brod. 

From Hungary west of Barcs to Kvarner and eastern/southern Istria: 
Nagykanizsa – Maribor – Ljubljana – Postojna – Rupa (entrance to HR) – Rijeka (A7/E61) – then towards coastal and inland destinations. 

From Hungary west of Barcs to northern/western Istria: 
Nagykanizsa – Maribor – Ljubljana – Postojna – Koper – Kaštel – Umag – Poreč – Rovinj – Pula. 

From Hungary east of Barcs to Istria and the northern coast: 
Option 1: Virovitica – Suhopolje – Daruvar – Garešnica – Kutina – Popovača – Sisak – Petrinja – Gvozd – Vojnić – Karlovac – further via A6 or A1. 
Option 2: Beli Manastir – Osijek – Nova Gradiška – Popovača – then the same route as option 1. 

From Hungary east of Barcs to southern Dalmatia: 
Option 1: Virovitica – Kutina – Nova Gradiška/Babina Greda – further via Bosnia and Herzegovina (Slavonski Brod, Svilaj, Stara Gradiška, Slavonski Šamac). 
Option 2: Beli Manastir – Osijek – Babina Greda – then the same route through BiH. 

Recommended return routes from the Adriatic coast: 

From southern/eastern Istria and Kvarner towards Slovenia/Austria/Hungary: 
Rijeka – Rupa – Postojna – Ljubljana – further towards Maribor, Nagykanizsa or Graz/Villach. 

From northern/western Istria towards Slovenia/Austria/Hungary: 
Kaštel – Postojna – Ljubljana – further towards Maribor, Nagykanizsa or Graz/Villach. 

From Istria and the northern coast towards Serbia or eastern Hungary: 
Karlovac – Vojnić – Gvozd – Glina – Petrinja – Sisak – Popovača – then further via A3/E70. 

From the southern coast towards Serbia or eastern Hungary: 
Return travel is recommended via Bosnia and Herzegovina.