I just read about this in the Seattle Times. The article says that they have created a website to help people 50+ stay healthy in the New Year. They have created this website about Seattle-area hiking and walking programs, including maps and links to the area's best walking areas! This is such a great idea! Go here to check it out.
As I said in my post about "Hiking Safety", it is important to have a hiking partner to stay safe on your hike. This is a perfect opportunity to find active, like minded people to enjoy the outdoors with.
I hope you can take advantage of some of this info and enjoy all the Pacific Northwest has to offer!