A DAD will undertake a gruelling fitness challenge for charity before completing his first London Marathon.

New Look supply chain co-ordinator Simon Mitchell will tackle a 150km challenge at Mission Fitness Gym in Weymouth, consisting of a 20km row, a 100km cycle and a 30km run.

Mr Mitchell, 32 from Weymouth, will complete the fitness test on January 31 and all proceeds will go towards his fundraising efforts for his first London Marathon in April.

He said: “I’m trying to raise £1850 in total and this challenge is one of many things I will be doing to raise as much money as I can, including a cake sale.

“I’m exhausted from all the gym training but it’s for such a worthwhile cause.

“I’m raising money for charity Anthony Nolan because they do a fantastic job for so many people across the UK.”

Mr Mitchell has two daughters, Jasmine, 12, and Chloe, five.

He is running the marathon to fundraise for Anthony Nolan, a UK charity that works in the areas of leukaemia and stem cell transplantation.

The charity manages and recruits donors to the Anthony Nolan Register, one of just three bone marrow registers in the UK.

Mr Mitchell became inspired to help after signing up as a stem cell donor for the charity.

He added: “I joined the gym in 2010. My training is going really well so far and I feel ready to give the challenge a go. I would ask anyone who can donate to please give anything they can.”

To donate, visit http://uk.virginmoneygiving.com/SimonMitchell81