Lisbon Eco Marathon is a sustainable running event in Lisbon, bringing together sport, wellbeing and environmental awareness. Scheduled for 11 April 2027, it invites participants to run through the city while enjoying its natural surroundings and sharing an active community experience. The event offers options for different abilities and ambitions: a 42-kilometre marathon, a 21-kilometre half marathon and a 13-kilometre mini marathon, alongside an 8-kilometre community walk.

Participants can choose a distance that suits them, train toward their goal and take part in a celebration of health and sustainability. The website provides information about the races, registration, event regulations and contact details, with online sign-up available. Lisbon Eco Marathon is presented under the Twenty Two Celsius brand, which is identified as a brand of Arriaga Pinto e Leite Lda, a company based in Lisbon.

By combining multiple race formats with a focus on community and environmental consciousness, the event offers runners and walkers a shared way to experience the city through movement