Answer
The Montevideo Rambla stretches along the coast for about 22-26 kilometers; the difference in figures depends on which extreme sections are included in the measurement. For the visitor, it is more important to understand that this is not one short walking area, but a long system of promenades connecting several areas and beaches.
Walking its entire length in a single outing is impractical. Choose a section near Parque Rodó, Pocitos, Punta Carretas, Buceo, or Malvín, and use a bus or bike to travel between distant points. The route is exposed to the wind and has almost no continuous shade.
If you are planning a run or bike ride, measure your section in a navigation app and check the surface. To relax by the water, focus on a specific beach and the lifeguard flags: the Rambla runs along stretches of coast with different conditions.