Turffield Stadium is the largest building in the town and is the site at which the first installment in the Galarregion's Gym Challenge takes place. It is located at the northernmost part of the town. Like most Stadiums in the region, the Turffield Stadium contains a Poké Mart and a uniform shop.
In the Gym mission, the player has to herd a flock of 20 Wooloo to mats in front of straw bale blockades. The Wooloo roll away from the player as they approach them. There are a total of four sections, in each of which the player must herd all 20 Wooloo to the mat at the end of that section before they can progress to the next one. In all sections except the first, there is a Yamper (two in the final section) that also pushes the Wooloo around, obstructing the player; if the player defeats a Gym Trainer, the Yamper in the same section stand idle next to the Gym Trainer for the rest of the Gym mission.
The player can withdraw from the Gym mission at any time by returning to the entrance. If the player loses a battle or withdraws, the mission is reset; however, defeated Gym Trainers cannot be battled again and their corresponding Yamper is permanently idle. Once the player has completed the Gym mission, even if they leave or lose, they can still proceed straight to the Gym battle.
Pokémon in Turffield Stadium Cards listed with a blue background are only legal to use in the current Expanded format. Cards listed with a silver background are legal to use in both the current Standard and Expanded formats.