Based on a 5 year average and a race date of September 18th, Boulder can expect temperatures between 86℉ and 67℉ with humidity around 80% and precipitation of 0.04".
Last year the weather condition was Mist.
Boulder current weather
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RUN 4.75 Video
RUN 4.75 Disclaimer
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Race results &/or participant numbers
Course map and elevation chart
RaceEntry.com also cannot attest to the validity of individual RUN 4.75 reviews. All of the information about the race has either been supplied by the event staff or can be modified at any time by their race management. 2015 RUN 4.75 registration details are only as accurate as the event has made them.