The number of bikes in Upsalla undoptedly you can compare (in Europe) to Netherland. Everywhere you can find bike-parkings, bike-pathways and other bike-facilities.
Additionally out of the city you can find marvellous places for biking in the nature. They are not only for advanced riders but also for novices.
If you come to Uppsala during winter, you can go see a game of the popular sport "bandy". Played on ice, but with a ball instead of a hockey ouck, this is a very popular sport in Sweden and some other northern countries. Ask at the tourist office for schedules. The arena is close to the town centre and called "Studenternas". Enjoy!!