Thialf is a large indoor speed skating arena located in Heerenveen, Netherlands. It is named after the Norse mythological hall of the same name, which is associated with strength and valor. The arena has a seating capacity of around 6,000 and is known for hosting various national and international speed skating events, including World Championships and World Cups. Opened in 1986, Thialf features a 400-meter oval ice track and is considered one of the premier venues for speed skating. The facility has undergone several renovations to enhance its features and maintain its status as a top destination for athletes and fans alike.