Including 14K, 23K, 37K and 50K runs across three open space preserves with views of the Pacific Ocean and Santa Cruz Mountains. Visit www.active.com to register. This half marathon and 10K run is in its 16th year. Visit www.active.com to register. A 5-mile, leisurely paced hike with docents Paul Vadopalas and Tommi Smith along the Ridge Trail.