I bought this book on a trip to San Diego when an attempt to visit a lake on bike failed. The person I cycle with has limited range, and I do not wish to crash anymore than I already have by riding something too advanced for my skill level. I tried the Lake Miramar trip and fell in love with cycling San Diego, and this book. I can't wait to try more of the trips. My only complaint is that the directions are small inset illustrated maps. We missed the Lake Miramar entrance twice. I suggest additional mapquest directions for people who are out of town. I really enjoyed this book, and I recommend it.