Young men constitute the main group of cyclists in Poland. The risk factors for bike-related accidents in our study proved to be: educational level (secondary education and incomplete higher education), number of children (having at least 3 children), frequency of using a bike (the more often, the more injuries), type of bike used (mountain bikes and fold-up bikes), and frequency of using a helmet (using helmets was correlated with a higher rate of injuries). The upper and lower extremities were the most common location of injuries.