She ran the 20K distance in one hour , eight minutes and 47 seconds .
At the 28th New Haven Road Race , the site of the USA 20K Championships , Boulder 's Colleen De Reuck set a new U.S. masters record for runners ages 40 and over .
Colleen De Reuck ran the 20K distance in one hour , eight minutes and 47 seconds .
At the 28th New Haven Road Race , the site of the USA 20K Championships , Boulder 's Colleen De Reuck set a new U.S. masters record for runners ages 40 and over .