Photos: BolderBOULDER 2013 safe, exciting and hot!

After the Boston Marathon attack, runners took to social media to declare that they wouldn't be scared away from participating in the upcoming Colfax Marathon and BolderBOULDER -- and they were as good as their word. The Colfax Marathon went off without a hitch, and yesterday, increased security measures didn't prevent a huge throng from striding through Boulder. The BolderBOULDER is sharing some great photos on its Facebook page. Check out highlights below.

Continue for more photos of the 2013 BolderBOULDER.