Regardless of what type of sport an athlete is participating in, Olympics are extremely challenging and require a huge level of endurance and skills to compete. In the Olympics, you face off against the best in every category, and in order to compete against them you need to train rigorously, and that too under volatile climate changes and surroundings. Keep on reading for the top three toughest Olympic sports. GymnasticsOne of the fan favorites, gymnastics can often appear to be an easy sport. However, that is not the case. In fact, gymnastics is the toughest Olympic sport. This is because gymnastic requires a perfect synchronization between the mind and the most.Gymnastics is all about balance, strength, and control. A gymnast will never be able to compete in the Olympics if he or she is physically exhausted, in which case they will be unable to harness their flexibility. Likewise, it would be very easy for the gymnast to lose their balance if their mind is not clear and focused.Aside from that, prior to a successful gymnastic performance, the gymnasts have to undergo a strenuous practice of almost 4 hours every single day to condition their body into keeping in the right form. EquestrianEquestrian, also known as horseback riding is the second most difficult Olympic sport. Unlike other sports, in horseback riding, you have to control both your mind and body, as well as the mind and body of the horse. Otherwise, you are most likely to fall off the horse and fail.The most important task to achieve as an equestrian is to create a bond with your horse. It is not easy to create a bond with a 1200 pound animal who doesn’t speak the same language as you. A horseback rider needs to spend years with the horse to develop mutual understanding and synchronization.Horses are extremely challenging, not only do they test you to the utmost capacity with their own mind of doing things, but they also require absolutely accurate signs from the equestrian in order to perform activities.Horses notice even the smallest of the changes in your body language, be it your sitting positing, how you are holding the reins, your legs and more. As a horseback rider in the Olympics, you need to be constantly alert to your horse and your surroundings, where you manage the speed and angles of your horse effectively. Marathon:The marathon, which is a classic Olympic sport, is also ranked as one of the toughest sports. This is because a marathon is essentially running around 104 laps without taking any breaks. It is almost impossible for most people to even do a few laps without stopping.An Olympic athlete participating in the marathon needs a strenuous practice and extraordinary stamina in order to win. Marathons challenge an athlete to their utmost physical limitations, testing their aerobic skills as well their anaerobic and mental skills as well.And what makes the Olympic marathon stands out, even more, is the climatic changes. Every time the Olympics are conducted in a completely new location, with a completely different topography and climate than the last time. This means that the participants in the Olympic marathon are subjected to run in completely different atmospheres every time.Since climate and air density plays a very important role as a runner, these changes make it very difficult for an Olympic marathoner to practice for a certain terrain beforehand. For example, it would be very difficult for an Olympic marathon participates in a location where there is a very high humidity rate if that participant has practiced running in a very dry area.