The cool waters of the Housatonic River make Kettletown State Park and Lake Zoar popular recreation destinations.
This is one of my favorite spots to trail run. From looking at the maps and/or reviews, I can never tell exactly where people have been. That being said, the park is nice and quiet, clean, and maintained. The only problem I have run into is IRRESPONSIBLE dog owners. For some reason dog owners (and I am one) feel that it is ok to ignore the 'dogs leashed at all times' signs and let their dogs run wild, and even out of their sight line. Since I have been bitten 3x (NOT at KSP) I now carry mace.
With that rant out of the way--I typically park down towards the lake and run up towards the entrance, and then turn right towards the campground. I always head up the Pomperaug Trail and head back on the Blue/White trail, or the reverse. The trail is great with a variety of terrain. At times, it can get pretty challenging. If you want some extra mileage you can split off on the Pomperaug Trail and then back into KSP.
Mo V. on Kettletown State Park Trail
I like the Oxford Loop that runs into the Kettletown Trail. The loop starts at Jackson Cove by the Pavillion. You start by crossing thru the woods over a bridge and hug the lake line. it then goes up a mountain and cuts over to the other trail to make the loop. You can get to the tree top area and enjoy the view of the lake. Continue climbing up the mountain incline and then start your decent down. You cross over a fast moving brook and the trail follows the waterfall down to where you started. The trail is light travel, bring bug spray, hiking poles and snacks for a break at the tree top view. It is about an hour to do but you can continue to the other trails that Kettletown offers.