Decathlon – High Wycombe – Opening Hours & Store Details Decathlon is found in a prime spot in Eden Shopping Centre on Oxford Road, approximately 28.26 miles west of the centre of London, in High Wycombe (close to Wycombe Hospital and Buckinghamshire New University – High Wycombe Campus). This store provides service chiefly to the areas of Castlefield, Loudwater, High Wycombe, Downley, Booker, Disraeli, Totteridge, West Wycombe and Daws Hill. It is open today (Friday) from 9:30 am until 7:00 pm. Read the specifics on this page for Decathlon High Wycombe, including the hours of business, store address, contact details and more.