The first 500 participants in the “Step Out of the Darkness” prayer march will receive a free t-shirt. The day of activities is devoted to prevention and recovery from addiction. Marchers should report to the entrance of Centennial Plaza at East Central University at 9:30 a.m. to be transported by bus to Glenwood Park, then walk to Centennial Plaza. Contact Holli Witherington at the Brandon Whitten Institute for Addiction and Recovery, 559-5815, for more information.