One of the reasons we moved here was to do more outdoor activities, so the GF and I bought bicycles this week. During the week we went on the trail that leads from Northampton to Look Park. That ride is about 3 miles each way and was a good way to get started.
Today, since we had more time, we went on the Norwottuck Rail Trail
that leads from Noho to Amherst. If you like biking and are going to be around Northampton, this is the place to go. If you want to rent a bike there's a place along the trail called Valley Bicycle [8 Railroad St, Hadley (on the rail trail), (800) 831-5437]. The trail itself is 9.2 miles right now, but there are extensions planned. Of course, skating, scootering or just plain walking the trail is fun too.
The ride to Look Park is nice if you want to end up at a park, since the Rail Trail just ends at a parking lot.