There is no itinerary here in the usual sense, and that is deliberate. The day after Brazil's oldest marathon rewards staying close to the water rather than committing to a schedule.
Usina do Gasômetro
A former power station turned cultural venue on the Guaíba waterfront, and the clearest single expression of the city's relationship with its river. Best visited in late afternoon for the sunset over the water, and suitable for tired legs if the walk from transport is kept short.
The Mercado Público
Porto Alegre's central market sits in Centro Histórico, an easy taxi ride from BarraShoppingSul. It is a compact way to experience local food culture without a long day of sightseeing.
MARGS and Praça da Alfândega
A short cultural loop through Centro Histórico, taking in the state art museum and the surrounding square. Kept to 60 to 90 minutes, this suits sore legs better than a full day of walking.
Getting Back
Everything here is a short taxi from BarraShoppingSul. No return journey to plan, no transfers, nothing that asks more of the legs than they can give the day after a marathon.