edition.cnn.com — (CNN) -- Donations to the fundraising page of a young woman who died less than one mile (1.6km) from the London Marathon finishing line, are heading towards the $1 million mark. As news of Claire Squire's death spread across social media sites, so too did the link to her Just Giving fundraising page, sparking a flurry of donations reaching more than £400,000 ($650,000) and rising fast by Tuesday afternoon.