very easy, non-strenuous biking around the city, mostly down the river/park. it was nice to see the science museum without having to make a special trip down, as I wanted to see the building but had no reason to go inside. I enjoyed biking around the city and love doing bike tours. it was a fun way to see who else was traveling there and to see various parts of Valencia without needing to know where you are going. I also got lost and was late, but they were very accommodating and helped me catch up with the group. if you have a morning to do this it's a highly recommended way to get your bearings in the city before you go out on your own.