TrainAway might be a bit more popular than AI Endurance. We know about 1 link to it since March 2021 and only 1 link to AI Endurance. 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.
Simply go to https://aiendurance.com and sign up to try out your personalized predictive training plan. Source: about 3 years ago
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
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