Slough railway station is to receive a £2.5m upgrade to give disabled people better access for the 2012 Olympics.
Wembley and Hackney stations will also get funding to make them "step-free" by the time the Games start in London.
Thousands of spectators are expected to travel through Slough on their way to boating events at Eton Dorney Lake.
Work on all three stations is due to start in 2011 and be completed by 2012, in time for the Olympic Games opening ceremony.
Transport minister Chris Mole said: "Travellers will continue to benefit from better access at these stations for many years after the Olympics."