noun
a type of running race that is longer than a traditional marathon, typically ranging from 50 kilometers to 100 miles or more
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Ultrarunning is a sport that involves running longer distances than a traditional marathon.
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My friend is really into ultrarunning and is always training for his next big race.
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I never thought I would enjoy ultrarunning, but now I'm hooked!
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Ultrarunning taught me that I can push myself beyond my limits in all aspects of life.