Why can't I see trains going after May 2017 in the timetable?

The railway carriers update their timetables every year in May. Because of this, some train connections after May are not yet visible.

There are usually very few changes in the timetable after May. This means you are still able to plan your Interrail trip today. Simply look for train times in April, and use these to create your itinerary. When the train times after May become availabe, you can double check your itinerary.