Joining 2,000 trekkers we will venture across the Capital taking in unrivalled views of the skyline from its best vantage points, whilst raising vital funds for the Medical Research Foundation. Setting out from Putney Bridge - it's East towards the City, zig-zagging over the array of historic bridges - each with its fascinating story. 25km later, it's a finish line celebration in Southward past the majestic Tower Bridge. Thanks to support and income from other sources, 100% of all new donations the Medical Research Foundation receive are directly invested into cutting-edge medical research - in areas of high clinical need but where investment is low. By donating to my page you will help the Medical Research Foundation fund more vital research.