For 26.2 miles, the founder of Flutter, BostonTweet and #DownloadBoston directed his energy elsewhere. Boston businessman Tom O’Keefe ran for the second time in the Boston Marathon. His dedication...

From blood, sweat and tears to the “best thing to ever happen,” four startup founders divulged the often-veiled hardships that come with fledgling companies, all the while boasting about the triumphs...