Fancy winning a GoPro camera?
All you need to do is take a photograph while you are out walking in Northamptonshire, then share it via Twitter or Instagram using the hashtag #20msteps and your photo will be automatically entered into the competition to win a GoPro Hero camera.
Alternatively you can email your picture to firstname.lastname@example.org
You can submit a photograph any time before 5pm on Monday 21st September 2015.
After this date, a shortlist of the best pictures will be shared for people to vote for their favourite to win the GoPro camera.
If you need some inspiration, check out these pictures from last year's event.
Note: photos submitted to the competition may be used for health and wellbeing marketing campaigns, including future 20 Million Steps events. Please let us know if you do not want your photo to be used for this purpose.