Grate48: UK Tower Running Champion to take on The Cheesegrater in UK’s highest stair climb

On 10 November the UK Tower Running Champion, Mark “The Marauder” Sims, will tackle the 1,200 steps of The Leadenhall Building – better known as The Cheesegrater. The Grate48 event is the UK’s highest stair climb, raising money for Rainbow Trust Children’s Charity.

Mark Sims is known as the most successful British tower runner ever, having won several UK competitions at buildings including The Gherkin, Beetham Tower (Manchester) and Spinnaker Tower (Portsmouth). On an international scale, he finished eighth at the Empire State Building Run Up where he was competing against the world’s best tower runners.

“The Marauder” is travelling down from Liverpool especially for the challenge at the Cheesegrater, where he will be running alongside fellow elites David Harris and Martin Pedersen, who is flying in from Denmark specifically for the event. He will also be going up against endurance runner Susie Chan and BBC newsreader Sophie Raworth.

The elite runners will be the first to battle The Leadenhall Building’s 1,200 steps at 4pm, followed by groups of 50 participants at 15-minute intervals until 8pm.

Up to 800 people will have the opportunity to walk or run up the 737ft high building to the 48th floor, finishing over 200 metres above street level. At the top, runners will be rewarded with a well-deserved drink as they take in the breath-taking views of the Capital’s skyline.

Grate48 will raise money for Rainbow Trust, which supports over 2,000 families caring for a child with a life threatening or terminal illness. The challenge has been arranged in partnership with Oxford Properties, the real estate arm of OMERS, which has its European headquarters in the building, and is the co-owner of The Leadenhall Building in a joint venture with British Land.

For more information or to sign up for a place and reserve your time slot at Grate48, visit by the end of Monday 7 November or call Sophie Collins on 01372 220102.

Tickets cost £35 and minimum sponsorship is £160, enough for Rainbow Trust to fund six hours of vital support from a Rainbow Trust Family Support Worker, who provide emotional and practical support to help make life a little easier. 

Mark Sims, UK Tower Running Champion, said: “The Grate48 will be one of my toughest challenges yet, as the highest stair climb I have ever taken on in the UK. I’m excited to have the chance to tackle one of the country’s most iconic buildings and I trust the views from the top will be well worth the climb. I hope the event will encourage new people to discover this exhilarating sport, while raising money for a very worthwhile cause.”

Emma Haines, Director of Marketing and Fundraising at Rainbow Trust, said: “We are looking forward to seeing Mark Simms take on the Grate48 with his fellow elite runners and we welcome anybody who would like to take part in this unique opportunity. The funds raised from Grate48 will make a huge difference to families who have dedicated Family Support Workers helping them at home, in hospital or in the community to make life a little easier. We are extremely grateful to The Leadenhall Building and OMERS for their support.”

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