Myself and 2 friends recently completed this bike tour. When booking the tour, we all thought it would be a bit of a laugh, seen as we haven't (or I hadn't) ridden a bike since I was a kid!. This tour was the best, you went to some of the more popular areas of SFO, but the best part was the hidden secrets, areas that you wouldn't normally see as a tourist! Dan is an amazing tour guide who has a intimate knowledge and understanding of the local area. I would definitely recommended this tour to everyone heading to SFO.