Seoul's October 14, 2026 announcement says the Hangang Autumn Festival takes place October 17–25 across riverside parks and on the river. At Jamwon Hangang Park, both the fitness sessions known as 'O-un-han' and the 'Hangang One Meal' cooking activity on October 17–18 require advance reservations. A musical gala, 'ON Stage: When Stars Rise Over the Hangang,' takes place at Jamwon on the same dates and is advertised as free for walk-in audiences. On October 24–25, 'Hangang Forest Adventure' is scheduled next to the children's playground at Gangseo Hangang Park, featuring zipline and climbing activities. October 23–25 brings 'The Road Chef Hangang,' a K-street-food competition among 20 young-chef teams, to the swimming-pool area at Ttukseom Hangang Park. Confirm current program conditions and booking details on the festival website. Seoul recommends public transport due to expected crowds.