Ms Robins is taking part in the virtual Mother's Day Classic, which is raising money for breast cancer research

It's a cause close to her heart after being diagnosed with early stage breast cancer in 2008.

Part of the fundraising this year is also for an issue she's passionate about - research into the effects of breast cancer treatment.

"For young women especially, it puts you into a type of menopause with all its hot flushes, all its aches and pains, memory issues. It's like pregnancy brain but worse. And when you've been on that medication for 10 years, some of those side effects are permanent," Ms Robins said.

"I still suffer from short term memory issues. Organisation memory, so you think 'okay I've got these tasks to do' and then you start doing them and you forget which ones you're up to or what you were doing."

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The memory issues are a permanent side effect.

By taking part in the Mother's Day Classic, Ms Robins is hoping to raise awareness of those side effects.

"Even though it's 12 years on, I still suffer from some of the side effects of it. Once you've had cancer, the fact that you've had it never goes away," she said.

"It hangs over you for the rest of your life."

This isn't the first time the maths teacher has taken part in the Mother's Day classic. In 2018 she ran it in Newcastle where most of her children live.

While normally runners take part in an event together, this year it will be virtual with each participant uploading their own run.

Running eight kilometres is not an unusual feat for Ms Robins, who is married to running coach John Robins. Six days a week she either runs or walks, getting up to 15 kilometres on the weekend.

"It's always been part of my treatment. There's a massive amount of evidence to say exercise is really important in almost all treatment of cancer and mental illness, as well as a lot of physical illnesses," she said.

Running is also when she gets some brain space to think. Ms Robins said she sometimes allows her husband to join her on her runs, but if it's a long distance he has to stay silent.

On Sunday, he'll be at the halfway point to give her some water and encouragement.

Ms Robins has raised $150 so far for breast cancer research. To donate head to the Mother's Day Classic website.