Letná is an oasis of green in the city, offering stunning views from across the Vltava River. To begin this route, you can either take the tram to Korunovační station or, if your hotel is in the historical center, you can begin there to cross over the Cechuv bridge and negotiate some 200 stairs to the park. The park has lovely shaded, level paths, mature trees, and a colorful assortment of bushes. The park is ~1 mile in length from one end to the other, paralleling the river, and about 0.5 miles wide. The highlight of this route is the 75-foot-tall functional Prague Metronome, which was was erected in 1991, taking the place of an enormous monument to former Soviet leader Joseph Stalin that was destroyed in 1962. A great reward at the end of your run is a visit to the Letna Beer Garden.
Note: Stromovka Park and Letná Park are within 1km of each other and can easily be combined into a lovely, longer run. In between the parks is the Running Mall, a center for Prague running: store, training center, lounge, run club, classes.