Friend Nicola Short told the BBC: "I don't think any of us had any idea of how much she would raise. I think she would be completely overwhelmed and completely over the moon. She'd be going 'woo hoo', excited."
Donations made in memory of 30-year-old Claire Squires have broken the £1million mark on the same day her funeral has been announced.
The 30-year-old who died during Sunday's London Marathon has been called an "inspiration" and "incredible".
Donations to the charity of Claire Squires, the young woman who died in the London marathon, have reached almost £220,000.