Two 2023 Zipline Guest Passes to Sonoma Zipline Adventures.  Good Monday - Friday for the Tree Tops Course.  The Tree Tops Course is their fastest, highest and longest course. Fitted with a specially-designed harness, you’ll reach speeds of up to 40 miles per hour on their fastest zips. On other elements of the course, you can savor breathtaking views of the majestic Redwood forest at a more leisurely pace. 7 zips, 2 sky bridges and a rappel round out this adventure, along with a guide who will help you see the Redwoods like you’ve never seen them before.