The Oakley 20 is a classic 20-mile road race and one of the most popular final long runs in the marathon training calendar. Set on a beautifully measured, undulating course through rural Bedfordshire villages of Oakley, Pavenham, Felmersham and Stevington, the race offers the perfect balance of challenge and rhythm for strong, steady pacing. With outstanding marshal support, clear signage and a professionally organised event, runners can focus entirely on their performance — and enjoy the reward at the finish: the iconic Oakley 20 finisher hoodie, a true badge of honour for marathon season.