We're a group of three.
landing in Craiove, and we want to get to Retezat Park. what is the best way to do that? we dont have a car..
Best way to do so is probably renting a car. Travelling by train takes a lot of time as the railway system is kind of old and not always comfortable.
I think a good option is Craiova - Ohaba de sub Piatra (~6h, 2 trains and 11 euros) and you can check times here: https://www.trenulmeu.ro .
From Ohaba de sub Piatra village there are 16 km until de place where to start the trail - Cârnic .
You can hitchike this road though not many cars pass by if not weekend, hike it or as I just googled it now it seems to be 2 private drivers that can take you there (Transport: Ohaba de sub Piatra - Carnic: dl. Victor Crudoane; +40722 667511; +40752 089611 si dl. Victor Farcas: +40724 560 403) - price 9 years ago was 2-3 euros/person.
Trails are marked quite well but I wouldn't go without a map.