Active fifty-year-old looking for company for walks and more

For a few days a fifty-year-old, who enjoys an active lifestyle, athletic, independent, and emotionally stable, is looking for someone to spend time with. Maybe lunch, a walk, and who knows, maybe something more. I am looking for someone of a similar age, preferably younger, active, and able to be and give being. Currently in NJ, but I am thinking about moving to NY, where I used to live and work.