Motorised bathtub racing will be on offer at a free event in Vale Park on Saturday.
It has been organised by the Aylesbury Churches Network, which is a group of 14 churches in the town. The community fun day will feature giant TV screens so families can watch some of the Paralympic games.
In the evening the annual proms in Vale Park will take place.
Event spokesman Rev Martin Kuhrt said: “We are proud of the heritage of Stoke Mandeville and determined to celebrate it.”