Watres Trail Hike, 6.5 moderate miles. Meet at the Park and Ride, Route 315, in Dupont. Sunday at 11:45 a.m. Sponsored by the Susquehanna Trailers. 655-4979.
GPS for Beginners, an introductory program on how to use GPS systems for recreational fun such as geocaching. Nescopeck State Park, 1137 Honey Hole Road, Drums. Sunday at 1 p.m. Registration: 403-2006.
Bat Chat, an illustrated talk on the hazards bats face in the wild and the natural history of local species along with live specimens, skulls, study skins and mounts. Lackawanna Environmental Institute, Moffat Estate, Route 435, Covington Township. Tuesday at 6:30 p.m. $3. Registration: 842-1506.
Great Pumpkin Run and Fun Walk, a 5K run or walk along the trails of the Susquehanna Riverlands, Route 11, Berwick. Oct. 31 at 10:30 a.m. 759-1300.
Live Bats: Fact or Fiction, a Halloween Day event to learn the facts about these flying mammals. Wild Birds Unlimited, Dallas Shopping Center, off Route 309, Dallas. Oct. 31 at 11 a.m. Free. 675-9900.
Lehigh Gap Hike, seven difficult miles. Meet at the Sears Automotive Center, Wyoming Valley Mall, off Kidder Street, Wilkes-Barre Township. Nov. 1 at 10:45 a.m. Bring lunch and water. Sponsored by the Susquehanna Trailers Hiking Club. 889-5256.