The event, sponsored by the South Western Times, encourages parents and carers to take time out of their busy schedules and walk with their children all or part of the way to school.
Pedestrian Council of Australia chairman Harold Scruby said Walk Safely to School Day has never been more relevant.
"With nearly one-quarter of all Australian children and adolescents overweight, improving their fitness and wellbeing is a real challenge for Australian communities," Mr Scruby said.
"Walk Safely to School Day is a fun and easy way to remind people about the benefits of an active and healthy lifestyle, it is also a great opportunity to learn about safe pedestrian behaviour and teach young Australians about sustainable methods of transport."
At many schools around the country, school children who participate in the day will be rewarded with a healthy breakfast organised by their schools, parents, community groups, councils and local businesses.
National Walk Safely to School Day is a genuine community event that boasts wide support across the country, including from Woolworths and Safeway, the Australian Government and all State and Territory Governments along with the National Heart Foundation, Beyondblue, The Cancer Council Australia, Planet Ark, and Diabetes Australia.
Schools wanting further in formation, wishing to register for Walk Safely to School Day or a reduced price Woolworths and Safeway fruit offer should visit www.walk.com.au.