Mountain Bikers Demand More Trail Access in the Sport's Birthplace, Marin County

Mountain biking advocates in Marin County are frustrated at what they see as the slow pace of new trail openings, promised in a 2014 Marin County road and trail management plan. They say that the sport is growing at an annual rate of more than 11 percent and they need more technically challenging trails. But hiking and equestrian groups argue that they are the biggest users of the open space and that the bikers travel too fast for safety and disrupt nature. Forum discusses the issue and hears from both sides of the debate.