Running in Sevilla
Sevilla (Seville) is a pretty flat city. The Guadalquivir river flows through the city and kind of folds over itself so that there are actually two waterways in the middle of the city. There are running/biking paths on both sides of both rivers for running. Note the four markers below showing the paths following each edge of the two waterways. All four paths are car-free. Three of four of these paths are mostly paved. The western-most pin indicates the path which is mostly dirt.
Trail (-ish) running: On the more eastern waterway, on the east side and south of Puente de San Telmo, the path along the river is hard-packed dirt.
There are several other areas I visited but did not run. The Parque de Maria Luisa contains the Archeology Museum (unfortunately closed for renovation while we were in Seville) and the Museum of Popular Arts and Traditions (interesting and free). There are a number of dirt paths throughout the park – at the time we were there, the many orange trees were blooming so the scent of oranges hung in the air. It’s about 3/4 of a kilometer in length but trails twist around throughout.
The Parque de la Vega Triana is about a kilometer long with mostly paved but also mostly car-free roads.