The Explore Chenango Outdoor Challenge is coming up this weekend at the Rogers Environmental Education Center in Sherburne. A statement from the center says they are one of 14 locations across the county that people can explore over the spring and summer months. The big kickoff event is this Saturday from 11 to 3, to coincide with the annual Earth Day celebration. Trail guides will direct challengers to explore sites in Afton, Bainbridge, Greene, Oxford, McDonough, New Berlin, Sherburne, Pharsalia, and South Otselic.