Useberry might be a bit more popular than TrainAway. We know about 1 link to it since March 2021 and only 1 link to TrainAway. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Trainaway.fit is probably the closest thing to what you mentioned, as they cover many countries. However, they only sell day passes. I used them a few years ago. Source: almost 2 years ago
I've been looking at the variety of UT sites available for remote usability testing (useberry.com, maze.co, userzoom.com, UserTesting, userbrain.com, TryMyUI, userlytics.com, uxarmy, UXcam). Source: about 2 years ago
Gympass - Gympass is a fitness discovery platform connecting the world's network of fitness facilities to companies and its employees.
Maze - Beautiful & actionable analytics for InVision prototypes
Classpass - Workout at the best studios in your city.
Easy User Test - Easy User Test is a user testing tool that offers the easiest way to test your text and design.
Fitt - Discover health & fitness in your city
Maze Templates - A library of pre-made user tests and surveys