The postings urge trail users to stand facing any mountain lion they encounter, make loud noises while waving their arms, and not run away. Janowski and Walt Prater, who ride their mountain bikes on the trails of Santa Teresa Park regularly, said they often see deer, wild turkeys and wild boars. One time they came right up to us. David Zwick and Cheryl Reinking, seasoned naturalists who hike and bike around the world, said they use the trails around the Ridge Trail three to four times a week, all through the winter. Reinking said there have been instances where hikers and bikers have clashed on the trails.
Hikers feel threatened because they are barreling down the hill.
On the whole, they said, hikers and bikers share the trails peaceably. The Web site offers maps, trail information, elevation diagrams, notice of upcoming trail activities and information on how to join the Bay Area Ridge Trail Council.