There's lots of family-friendly bike rides and activities this weekend:
On Saturday June 4, 9a-noon West Windsor Bicycle and Pedestrian Alliance is hosting a Learn To Bike event at the West Windsor Community Farmers' Market, participants are asked to join the all-volunteer WWBPA.
Also on Saturday at 2pm there's a free 4 mile (each
way) D&R Canal Path ride starting at Alexander Rd Turning Basin
Park, sponsored by East Coast Greenway Alliance, see: https://www.eventbrite.com/e/east-coast-greenway-national-trails-day-bike-ride-on-the-dr-canal-tickets-25328714868
Also on Saturday at 9am is the 14 mile Tour de Trenton, starting at Franklin Park, see: http://www.trentoncycling.org/2016-trenton-bike-tour/
On Sunday June 5, 10am there's a free 8 mile ride around
Lawrence neighborhoods starting/ending at the Lawrence High School parking lot,
no registration necessary, sponsored by Sustainable Lawrence, see: http://sustainablelawrence.org/home/2016/05/28/lets-move-lawrence-ralph-copelman-ride/
Jerry