/ ɪnˈdjʊərəʊ; en-; NAmE ɪnˈdʊroʊ; -ˈdjʊroʊ/ noun
( pl. en·duros ) a long-distance race for bicycles or motor vehicles over rough ground, which is designed to test how long people can continue
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WORD ORIGIN
1950s: from endurance + the informal suffix -o .