movie I missed the title of.

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I once saw a movie well most of it, I missed like the first ten min so I didn't get to see the title. It was a bout a teenager who while hanggliding ending up in another world. I remember he was told he could only return to his world while in the sky. I've been trying to figure out the title ever sense. I think it was one of the Wonderworks prooductions but I am not really sure.