Now, the hardest part of writing about the most dangerous sports in the world is figuring out the deadliest ones. If you run your eyes across the overall number of sports injuries, you might find Auto Racing and Heli-Skiing in the top 10, which is really surprising. According to statistics, Heli-Skiing’s fatality rate is 32 in 106,000 skiers over 46 years and over 520 people have died in U.S. auto racing in the past 25 years.