I will be completing 'Zack's Medway 50km Ultra Marathon'. This is around 7km more than a marathon and before training the most I had ever gone was 5km on a run.

I'm raising money for the British Heart Foundation and I'd be so grateful for your support. £24 could pay for two hours of research by an early career scientist, but every pound helps so please give what you can to help me hit my target.

Training is well underway and I will be aiming to run the complete distance in 5 hrs 30 mins. This will be a step up from the previous challenge of the Yorkshire Three Peaks.