An ultramarathon is any running race that exceeds the distance of a standard marathon, which is 26.2 miles or 42.195 kilometers. These races can vary in length, often starting at 50 kilometers, about 31 miles, and can extend to 100 kilometers, about 62 miles, or even longer. Ultramarathons are designed to test an athlete's endurance, as they require running over very long distances, often in challenging conditions such as rugged terrain or extreme weather. Participants must possess exceptional stamina, mental toughness, and the ability to manage their energy over an extended period of time.

英語での「ultramarathon」の定義と意味

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