Mount Diablo Challenge
Sunday, Oct. 13, 2019
Monte Vista High School located at Stone Valley Road, Danville

The Mount Diablo Challenge is a family-friendly 11.2 mile timed bike ride, starting at Athenian School in Danville and climbing up Southgate Road 3,249 feet to the summit of Mount Diablo.

It's hard so it's fun!
http://www.mountdiablochallenge.org/