Event Description The 2020 Calvin 5k Spring Classic is presented by Aspen Investment Management, Inc. Event Location & Accomodations Trending Events Union County Sheriff’s Office (UCSO) Deputy Dash 5K Trail Run Viking 5K, 10K & Half Marathon Boomer Lake Park, Stillwater, OK (6-15-2024) RD1 1st Annual Juneteenth Freedom 5K Run/Walk