I'd never run a marathon before - six years on, I'm one of the UK's fastest female marathoners. Here's how I train every week

Marathon runner and athlete Anya Culling.

If you've got even one toe in the running world, you'll have heard of Anya Culling. She's one of the fastest female marathoners in the UK, a lululemon ambassador, and a run coach for the raved-about training app Runna (which, in news that reverberated throughout the running world, was acquired by training giant Strava just last week).

She's lacing up again and will be on the London Marathon start line this morning, after what she's described exclusively to Marie Claire UK as one of her favourite training cycles ever.