Runners participate in the 2016 Bolder Boulder 10K. More than 50,000 participated.

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Runners and walkers participate in the 2016 Bolder Boulder 10K. More than 50,000 participate show up each year, including many internationally respected competitors. There is a wheelchair race as well . For more info:

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Size: 4183px × 2995px
Photo credit: © Ron's Boulder and Colorado Collection / Alamy / Afripics
License: Licensed
Model Released: No

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