Transform your smart-trainer into a simulator by installing Challenger Indoor on your smartphone, the most advanced app for indoor cycling with 4K videos and real audio! Mirror your smartphone onto your smart tv, monitor, PC or Mac

(we tell you how: FAQ,  question 8)

We filmed the most beautiful routes while collecting the real slope!

But is the Stelvio too tough for you? Select beginner or intermediate level and you'll get just 1/3 or 2/3 of the real slope  😉

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