If you go in their website there is an interactive map, you can click on open terrain and it highlights only open.
Right now it's basically k1, north ridge and snowdon. They are working on Skye peak next. Today first day of top to bottom.
There needs to be a map of Killington that highlights the trails that are open instead of just telling us how many trails are open. We want to know what part of the mountain is open. A visual would be nice.