Build It - Ride It - Post It! This year's virtual event will be a judged video contest where you build your own course, film a run through the course, and then post it on Instagram to WIN!. Entry into the event is free of charge. Simply post your 30-second video to your personal Instagram account before Dec. 13, 2020 and tag #DirksenDerby13 to enter. See Derby website for more details.