Wuerzburg offers a variety of leisure activities. The Main promenade, the ringpark, the vineyards and the "Steinbach"valley are great places to get some exercise. The region also offers many cycling tracks.
Furthermore, the University Sports Centre ("Hochschulsport") offers a wide range of courses for which all full-time employees are also allowed to sign up.
For 25 € they can buy a sports pass ("Sportausweis") which entitles them to participate in a lot of courses.
On the Homepage of the University Sports Centre you can find more information on the current programmes.