The Claudia Mayer/Tina Broccolino Cancer Resource Center at Howard County General Hospital is leading ongoing slow- and regular-paced walking groups for cancer patients, survivors and their caregivers. Morning, afternoon and evening walks take place at Lake Kittamaqundi starting behind Whole Foods in Columbia. Walking groups are limited to 15 people. To register, visit bit.ly/HCGH_walk. Thursday, June 23, from 9:15 to 9:45 a.m. Thursday, June 23, from 10 to 11 a.m. Monday, June 27, from 1:45 to 2:15 p.m. Monday, June…