Fall colors will be waning during the Wertheim Wanderings hike at 10:30 a.m. Saturday, Nov. 18. This 5-mile walk (hikers can drop out at a 3-mile point) is organized by the Long Island Greenbelt Trail Conference and takes hikers near the bay, a tidal river, freshwater streams, ponds, a salt marsh and more. Meet at the Wertheim National Wildlife Refuge (360 Smith Rd.) in Shirley.