San Diego Sierra Club Bus Trips. The San Diego Sierra Club is part of the largest grassroots environmental organization in the country. In John Muir's tradition, the Sierra Club wants to make you fall in love with the wilderness, so the San Diego Sierra Club provides environmentally friendly outdoor adventures to satisfy the soul. For over 32 years the San Diego Chapter has been offering bus trips to a variety of National and State Parks within an eight hour drive of San Diego. What makes these trips special is that they are organized by a fantastic team of volunteer leaders and nobody pays them for their efforts. They do volunteer out of an appreciation for these special places and a passion for sharing them with others. We look forward to having you on bus trips to explore, enjoy, and protect the planet. Join us for a picture tour of two of the trips from 2017, Zion, and Ansel Adams Wilderness. Your guides for the presentation will be K.H. Chong participant since 2010 and Michael Taylor, who has been leading bus trips for six years. Free parking under Trader Joes. Info: 858-569-6005.