Proceeds from SF Mad Dash benefit Sunset Cooperative Nursery School. So in addition to having a great time, you will be helping a beloved community institution. Sunset began in 1940 as the Parkside Play Center, and is the oldest continually operating parent-participation preschool in San Francisco. The school is dedicated to providing a trusting and caring environment for children to play, learn, and grow. With a strong focus on the community, the environment, and an overall betterment of the world, your donation will help us all in the present and future.