This year again, NEMBA is hosting a friendly mountain bike ride that is taking place in Waltham and Belmont on Monday evenings throughout the spring and summer. NEMBA is the New England Mountain Bike Association and they will be holding this ride on Monday evenings at 6:00 pm sharp, arrive 10-15 minutes early. The ride leaves from the Lone Tree Hill parking lot off Mill St. in Belmont. Here is a link for more info.