Julie Brash was one of 24,000 cyclists to cross the finish line at the Prudential RideLondon – Surrey 100.
Mrs Brash, who works at North End Surgery in Buckingham, raised £2,200 for Meningitis Now from donations from family and friends and at bucket collections outside Tesco and Waitrose.
She also received donations from town traders.
The Prudential RideLondon is a two day festival of cycling, which took place last weekend. At points along the course riders had to wade through a series of mini floods and torrential rain.