Event Description The inaugural The Roar 5K takes place at on of the largest rservoirs in Southern California, Diamond Valley Lake. April 21, 2018 the Inland Valley will be awaken by The Roar 5K! Come join us for this family friendly event. Event details and schedule Event Location & Accomodations Trending Events Run The River May The 4th Be With You 2024 New England Series - Day 6 (ME)