Located on Old Street Road in Peterborough, before the roundabout at Monadnock Community Hospital is a great trail system for families and people looking to get in a short hike. There is plenty of parking. Sometime the building next to the parking lot holds events.
The trails are easy and you can do all of them in less than two hours. I like these trails for kids because there is a stream, bridges and large rocks all for exploring.
The trails are also relatively flat so easy for little legs or someone who wants to get out for an easy hike. Sometimes the trails are closed so make sure you read the sign out front before exploring the trails.