More than 7,000 pupils from 43 primary schools in Gloucestershire have signed up to walk, jog or run a mile every day between now and the summer holidays.
It's all part of Active Gloucestershire's Daily Mile initiative which is being officially launched at Cheltenham Racecourse.
Children at Twyning School in Tewkesbury run every day, whether on the school playground or the village green for older pupils. They have been doing it for a year and teachers say it has far-reaching benefits.
With childhood obesity rates rising, encouraging physical activity at an early age is important, and research has shown that children who are overweight in primary school are less likely to revert to a healthy weight in later life.
What is clear is that the children enjoy their Daily Mile. Here's what Twyning School pupils think:
It is not too late to sign up to Active Gloucestershire's Daily Mile challenge.