Mark Beaumont holds the Guinness World Record for cycling around the world in 78 days, but he's challenging families to complete the feat in ten.
Well, not exactly. The Big Pedal is back for 2018, and this year school children, parents and teachers are urged to cycle or scoot to school over the ten-day period, competing with other schools to rack up the most journeys.
They can also track their progress on a map. Mark Beaumont cycled 18,000 miles through 16 countries last summer, so there's a lot to inspire the participants.
"I'm delighted to be supporting the Big Pedal 2018. It's a great initiative for getting more young people on their bikes and scooters, building their confidence and independence in a fun and engaging way," says the record-holder.
"Encouraging young people to cycle and scoot from an early age not only boosts physical and mental health, it also helps build good habits for independent and active travel into teenage and adult life."
The Big Pedal 2018 (April 23rd to May 4th) is organised by sustainability charity Sustrans, who'll be offering help, support and lots of stats across the competition.
"At 1.6 miles the average primary school journey is a distance that can be walked, scooted or cycled as an easy way of building more physical activity into our busy lives," says Sustrans CEO Xavier Brice.
"As well as being fun, Big Pedal can help kick-start entire families into leading more active lives, while reducing congestion and air pollution around the school gates.
"Although the competition runs for just two weeks, it can be a catalyst for long-term changes in the way pupils, parents and teachers travel to and from school."
A Superhero Fundraising Day will be the finale of the the Big Pedal 2018, which is open to individual classes as well as whole schools. If more than 15 per cent of a school cycle or scoot on each day of the challenge they'll be entered into daily draws for prizes like bike stunt shows.
More info can be found at www.bigpedal.org.uk.