This is a pleasant run in the northern part of Rosario, combining a loop of Parque Alem with a cycle path alongside Av. Eudoro Carrasco to La Florida Beach. The northern ~1 km has some nice water views.

Promenade at La Florida. Google Street View

Start at Parque Alem, where there’s a parking lot next to the outdoor pool complex. Do a ~1.5 km loop around the park’s perimeter path, using the pedestrian bridge to cross the major road. Then head north on the cycle path alongside the riverside road, which changes names several times. It’s nearly 3 km to the end of the path at the Rambla Cataluña vista point at La Florida, a small riverside beach. The scenic section is the northern ~1 km of the path, with river views. Retrace your steps to the start.