Thialf is an indoor long-track oval in Heerenveen, Friesland. It is part of Alpes 2030 because the ice cluster moved to Lyon and the long-track programme did not fit that move. The 12 October 2026 release says the whole ice cluster and its athlete village went to Lyon "except long-track speed skating, which will be held at Thialf".
Short track is not here. Short track is at Eurexpo in Chassieu, with figure skating and curling. If you only remember "skating is in the Netherlands", you will miss the Lyon sessions, and the other way around.
The September release, spoken by the organising committee's director general, counts five clusters: Lyon, Haute-Savoie, Savoie, the Briançonnais, and Thialf. A French Alps holiday does not include this rink unless you add a flight. Amsterdam is the practical airport, then the Dutch rail network to Heerenveen. Check NS for the current train, and do not invent a coach from Courchevel.
The photograph on this page is a 2015 World Championships session inside the building, so you can see the sport. It is not a picture of the 2030 fit-out.