Four Days Diablo is a "Gently Roughing It" backpacking trip starting in Walnut Creek and ending 30 miles and four days later at Round Valley Regional Preserve near Brentwood. Along the way hikers are led through rarely seen Mount Diablo landscapes and then treated to gourmet meals each night hosted by local restaurants.
For more information contact Save Mount Diablo: https://www.savemountdiablo.org