21st Annual Reece's Roundup 5K & 1 Mile Walk

The 21st Annual Reece's Roundup is a Castle Rock summer running tradition — a 5K and a 1 Mile Walk at Philip S. Miller Park on Saturday, August 8, 2026, from 7 to 11 AM. It's put on by Run to Change Lives, the same nonprofit behind the July 4th Rock-It Run, and benefits the Reece Anthony Rubino Benefit Fund, supporting Reece Rubino and others living with spinal muscular atrophy (SMA). 5K registration is $45; the 1 Mile Walk is $40. Register at runtochangelives.org/reecesroundup.