Shamrock Stampede 5K (Denver) Castle Rock, CO   Mar 14, 2026

ShamROCK Stampede’s mission is to elevate the celebration of St. Paddy’s Day with a family-friendly Walk/Run and Irish-themed festival to increase awareness and raise funds for organizations that help our veterans, first responders, and others break free from PTSD and mental illness. You are CHANGING LIVES when you register for the ShamROCK Stampede. Whether you are a serious runner or a leisurely walker, bring the whole family and join the fun. All proceeds benefit the University of Colorado Anschutz Medical Campus and the Live Free Association.