Competing in a 10K is a popular form of running event that involves running a distance of 10 kilometers, or 6.2 miles. The term '10K' is derived from the metric system and is used to describe a RACE that is 10 kilometers long. To compete in a 10K, one must RUN, RAN, raced, RACES, WATER, RACE, SKI, or BIRL. Running is the most common way to compete in a 10K, as it requires the least amount of physical effort. Racing is also an option, as it involves competing against other runners in order to achieve the best time. Watering and skiing are also popular ways to compete in a 10K, as they involve navigating through WATER or snow-covered terrain. Birling is a unique way to compete in a 10K, as it involves balancing on a log while paddling with a single-bladed paddle.