This all-ages trek for a good cause raises money in support of care, support, and research through the Alzheimer’s Association. In addition to taking part in the two-mile walk, registered participants can sponsor “Promise Garden” flowers in different colors, representing their connection to the disease. Joseph P. Riley, Jr. Park, 360 Fishburne St. Saturday, 9am. Free, donations encouraged. (864)224-3045, www.act.alz.org