"When Keira first receives her breast cancer diagnosis, she never expects to end up joining a running group with three women she's only just met. Totally blind-sided, all she can think about is how she doesn't want to tell her family or step back from work. Nor does she want to be part of a group of fellow cancer patients. Cancer is not her club. And yet it's running - hot, sweaty, lycra-clad running in the company of brilliant, funny women all going...