Twisters Sports Center - Offers beginning and advanced instruction in bouldering, belay work, and safety techniques. Includes rates and hours. Located in Sunnyvale. Rock City Climbing - Anaheim Hills. Offers parties, classes, rope challenge course, and kid's programs. Granite Arch - Rancho Cordova. 23,300 square feet (17,000 sf climbing walls, a 400 sf ice wall, a 400 sf training wall, a 500 sf kid's Adventure Village, and a 5000 sf hand sculpted outdoor Boulder Park. 36 feet high. Parties and instruction. Planet Granite - Santa Clara. 14,000 square feet. Courses offered. Gear shop. Competitions. Weight equipment. Parties. Vertex - Santa Rosa. 35 feet high. Leading, top-roping and bouldering. Fitness equipment. Guiding. Courses offered. Parties. Kid's programs. Pacific Edge - Santa Cruz. 50 feet high. Leading, top-roping and bouldering. Gear shop. Parties. Courses offered. Vertical Hold - San Diego. 17,000 square feet. Leading, top-roping, and bouldering. Courses offered. Gear shop. Showers and lockers. Parties. Rocknasium - Davis. 7,000 square feet. 4,000 square feet of bouldering. 24 top ropes and 2,000 square feet of lead climbing. Parties. Courses offered. Hangar 18 - Upland. 10,000 square feet. Lead routes up to 70 feet long. Competitions. Courses offered. Parties. Youth programs and camps. Rockreation - Los Angeles and Costa Mesa. Lead climbing, bouldering, equipment rentals, showers and locker facilities, weight machines and cardiovascular training equipment. Courses offered. Sanctuary - Sand City. 6,000 square feet. 30 feet high. Parties. Guiding. Solid Rock - San Diego and Poway. Bouldering, top-roping and leading. Parties. Courses offered. Touchstone Climbing and Fitness - Owns and operates full service indoor climbing and fitness gyms offering classes, climbing, fitness, and community service. Includes staff profiles, pricing, events, membership benefits and locations.