The marathon takes you to Vienna’s most impressive modern and historic sights. It begins between the skyscrapers of the UNO complex, the site of the United Nations, crosses the 864 metre long Imperial Bridge (Reichsbrücke) over the River Danube. The race takes you past the Riesenrad or giant ferris wheel, through the green expanse of Prater Park. It then continues on Vienna’s Ring Road, past the famous Opera House, through Vienna’s River Valley to reach Schönbrunn Castle, the former imperial summer residence. On the way back runners can take in the greatest examples of Vienna’s architecture along the Ring Road, from the numerous museums and the Town Hall to the Burg Theatre and the University.