The 4th annual “Dominator” 5/10K Walk and Run is coming up Sept. 7 at Blue Dot Services of Maryland, 125 Industry Lane in Forest Hill. The event supports the D.O. Believe Foundation, created in memory of Dominic “The Dominator” Osorio the 7-year-old Bel Air boy who lost his battle with brain cancer in 2009. The 5K starts at 8 a.m. and the 10K starts at 9 p.m. Registration is $25 for the 5K in advance and $30 on race day and $30 in advance for 10K and $35 on race day. To race or to become a sponsor, visit http://bit.ly/1b0lgNY. Proceeds go to help pediatric brain research.