Sir Chris Hoy has hailed his son’s “amazing” progress from being born premature to cycling nine miles on his bike.
The cycling champion’s son Callum weighed just 2lb 2oz when he arrived 11 weeks early in 2014.
Hoy, 44, said Callum, who spent his first two months in a neonatal unit, was so tiny he could fit into his hands.
Now aged five, he has been clocking up the miles on his bike and tiring out his dad.
The six-time Olympic gold medallist said: “Callum has been out on his bike.
"We have got a bit of garden space where they can ride around and for the first time ever, because the roads are so quiet, I have gone out with him for a ride.
“He did about nine miles the other day and, I mean, I was tired. We live at the top of a hill so you have got to ride up this hill to the house and he made it all the way up.”
Hoy said he and his wife Sarra, who also have a two-year-old daughter, Chloe, went through a “terrifying” experience when Callum was born.
In October 2014, at 27 weeks pregnant, Sarra was diagnosed with potentially deadly pre-eclampsia.
It meant Callum had to be delivered by emergency caesarean section a fortnight later.
Edinburgh-born Hoy said Callum’s development in the past few years was “incredible”.
Speaking on the In The Pink podcast, he added: “He is doing great, it’s amazing.”
