A ribbon-cutting ceremony for the Malden portion of the trail will be held at noon on Saturday, Dec. 1 in Linden Square. The ceremony will be held at the corner of Beach and Lynn streets in Malden, near the Revere line. Weather permitting, the event will be followed by a 14-mile bicycle tour of the completed trail from Malden, through Everett and to the completed Wellington Greenway in Medford. Free bicycle safety checks will start at 11 a.m. There will also be food and other fun for families.