Thousands of walkers of all ages, some of whom have cancer, will take on the Marsden March today.

There are two routes between Sutton’s Royal Marsden Hospital and the Chelsea site, with walkers taking on a 14 mile route or a shorter five mile route.

Over the last four years the event has raised a staggering £4.5million for the hospitals, with more set to pour in this week.

The full 14-mile route goes through Chelsea, Putney, Wimbledon and into Sutton.

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Ready, set, go! Tim Vine cuts the starting ribbon

Among the walkers are bride-to-be Talia Golding and her future husband Pip Stone, who have raised more than £2,000 for the charity.

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Talia Golding and husband-to-be Pip Stone, above, will be walking today

Ms Golding, from Surbiton, was rushed to A&E in 2012 with breathlessness where she was later diagnosed with Non-Hodgkin Lymphoma.

After diagnosis Ms Golding was transferred to the Royal Marsden’s Cancer Trust unit in Sutton, where she underwent six rounds of chemotherapy and radiotherapy.

She relapsed three months later and was treated with more chemotherapy and a bone marrow transplant.

Ms Golding is now in remission, and is taking part in this year’s Marsden March to say thank you to the Royal Marsden.

Another cancer survivor set to take on the 14 mile route is John O’Shea, from Addiscombe, who was diagnosed with stage two testicular cancer in September 2012 and was referred to the Royal Marsden in Sutton.

He underwent three rounds of chemotherapy, but found out the disease had spread to his lymph nodes in 2013.

The 45-year-old was then given the all clear in November 2013 and will now take on the challenge to raise vital funds for the hospital.

At the end of the walk, people will be treated to an after party, with a barbecue, live music and face painting for the younger participants.