Shamrock N Run at Yorba Assist Rangers with medical aide, patrol (via bike, vehicle or on foot), and traffic control. Activity Details Date: Sunday, March 17, 2019 Time: 6:00 am - 2:00 pm Duration (hours:minutes): 8:00 Type: Stewardship Organization: OC Parks Area: Yorba Regional Park Staging Area: Yorba Regional Park Difficulty: 1 Minimum Age: 18 Email Activity to Friend