Kirsty Gallacher is calling on parents to ditch their cars and cycle to school with their children.
The TV presenter is backing the Big Pedal campaign from charity Sustrans, which sees pupils, teachers and parents get on their bikes for the school run.
Schools which sign up to the scheme will be entered in a virtual stage race around the UK. Pupils can help their school complete the race by cycling to school.
Prizes are on offer for the winning schools. The race is funded by the Bike Hub and powered by Sustrans, which encourages people to travel on foot, by bike or public transport for their daily journeys.
Schools will also raise money for Sustrans on February 28, when pupils can donate £1 to dress up as their favourite superhero.
Kirsty said: “Cycling the school run is a great way for kids and parents to get active and have some fun together. Sustrans’ Big Pedal competition is the perfect opportunity to give it a go.”
More than 950 schools took part in the Big Pedal 2012. According to Sustrans, their combined efforts saved 59,021 gallons of fuel, equivalent to £368,484.
Malcolm Shepherd, Sustrans chief executive, said: “The average primary school journey is just 1.5 miles, the perfect distance to walk or cycle. Every year The Big Pedal helps tens of thousands of families rediscover the fun and freedom of cycling to school, get fit and save money at the same time.
“Evidence shows how children that cycle to school regularly are more active and better learners, it’s time for us all to get on our bikes.”
Sustrans is calling on parents, teachers and pupils to cycle to school between February 28 and March 20. To get involved in the Big Pedal, go to http://www.bigpedal.org.uk.