Someone mentioned the Columbia Trail esp through Ken Lockwood Gorge. Easy walk more than a hike but gorgeous and grest place to cool off in the summertime.
Didn’t see anybody mention the Cushetunk trail at Round Valley Reservoir. Some decent elevation gain/loss on singletrack. Some really nice views and might even spot a bald eagle. Trail is well marked but a lot of loose decomposed limestone makes for tricky footing.
Columbia Trail is great for biking. We usually start in High Bridge sinc there is a slight uphill slope heading north. Makes for an easier ride back.