How to describe the size of a plane?

Przemek takes on his first-and-final bicycle trip. Due to a rare genetic disease he is gradually loosing his eyesight, and will be blind in a few years. Coming to terms with his inevitable future turns out to be tougher than the hardship of his challenge. While this adventure and the people he meets along the way enrich him, he finds no relief to his great loneliness. Soon he will be again trapped at home, with nothing more than an exercise bike, recalling memories of his achievement.