But instead, determined to raise money for the Great Ormand Street Hospital, the 29-year-old mother-of-two decided to run the 21km distance by herself.
The former teacher ran four-and-a-half times around a route in Midhurst – and all while wearing a baby sling with one of her son’s teddies in it.
Izzy said it ‘seemed appropriate’ considering she was raising money for a children’s hospital, and made it ‘a bit different and a bit more interesting’ – though a lot harder too.
She said: “I got a few odd looks. I didn’t see that many people but I ran at a distance saying ‘it’s for charity’. But by the end I was too out of breath.”
Izzy, who got into running after she had children and discovered that she found it ‘quite therapeutic’, has ran an organised 10k and 10 miles run before, and said: “It’s different because of the crowds of people.
“You’re running with other people and you get that adrenaline.”
But she was cheered on enthusiastically by her husband and sons Cassius, aged seven, and Arthur, who is nearly two.
She completed the run in one hour 50 minutes and raised £750 for the charity.
“I’m really proud that I did it,” said Izzy, who also runs an Instagram account sharing toddler play and activities called The Artful Toddler.
She plans to keep up her running and even try for a marathon next year.
You can donate to her fundraising total at www.justgiving.com/fundraising/izzyquickinson
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