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The eighth annual Paul Mitchell Xterra Trail Running World Championships return to Kualoa Ranch on Sunday with a 9 a.m. start time.
More than a thousand runners represented by almost every state, as well as dozens of countries, will take part in the challenge.
In addition to the main event that features $10,000 in prize money, 5k and 10k fun runs will be held, as well as a free kids race.