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Reece became a local running legend as a top age group competitor , a pioneer in the ultrarunning community , and founding race director of the Clarksburg Country Run , the first long distance road race in Northern California .
 Clarksburg, California
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Clarksburg, California