Redirect Alternative URL to PreferredCulture

You can add a culture specific URL slug for a page. And the alternative URLs are also based per culture. So, you can create different alternative URLs for different culture versions of a page, just switch to given culture.

Thank you for the fast answer Juraj.

This is sadly not what I want, let me explain a Use-Case for my request.

A client has Kentico 12 MVC Page that has multiple languages. Now they have an Event where you can register. They want also to Print something and want to use a Short URL like www.mypage.com/event

This URL should lead to the correct culture version of the page like it has been on the old K11 pages.

Basically, i ask for one Single URL that redirects to the page, based on the current culture of the visitor.

So, how is your project setup? How is it detecting the culture? When using Content tree based routing there are two options how the culture is detected: domain name - so you have separate domains for each culture or, by language prefix in the URL.
Or, you van use custom routing and define your own rules - you have the power to do so and do with the URLs whatever you want.
Or, add a code logic to your controller - you can check what is the user's culture or brwser culture and get the data in given culture.