Stars including Craig David, Lennox Lewis and Rio Ferdinand have donated their old runners to the show called Unlocked, which opened in London on Thursday.
Some rare trainers can fetch thousands of pounds - meaning that your smelly old joggers could be worth a fortune one day!
And if you prefer your trainers to look glamorous, there's even a special designer section for really flash footwear.
Organisers hope to auction off some of the shoes on display to raise money for the charity Sport Relief.
Unlocked is open from 23 May to 6 June at 363-367 Oxford Street, London W1. Admission is free.