Pupils braved the mud and elements in Gresham's School's first-ever 'Gritty Grasshopper' run, raising more than £3,700 for two charities, Farms for City Kids and the Lord's Taverners.
Teams of eight navigated their way around an obstacle course set on the Holt school's grounds giving them the opportunity to test their metal against other teams.
Tom Burnett, PE teacher and event organiser, said: 'The Gritty Grasshopper 2019 definitely delivered.
'Thirty five teams, 280 runners and more than £3700 raised - an afternoon spent defeating obstacles and deep mud, across the beautiful Gresham's school grounds. Smiles, laughter and good old fashioned team spirit galore.'
Each year the school selects a charity to support and pupils get involved in a range of fundraising events - which over past years have included sleeping outside in an igloo, cycling from Norfolk to Cornwall, dressing up, leg shaving and organising cake sales.
Mr Burnett said the run would return next year.
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