PUB Green Run is a virtual race that aims to contribute to the rewilding of the Rail Corridor in Singapore, an initiative under the National Parks Board’s 'OneMillionTrees' movement. The event is organized with the support of PUB, Singapore’s National Water Agency, and for every participant, $10 will be donated to the Nature Society (Singapore)’s role in the rewilding project.

PUB Green Run is a lifestyle app that allows participants to set a target time for their race and compare their time with up to two selected friends. The app tracks the participant's route and records their completion distance and time. Participants receive audio updates at various distance checkpoints throughout their run and can take photos within the app, which are shareable with a PUB Green Run digital frame. The app also displays the participant's results and the leaderboard.