Practising always begins on a Saturday evening (19 August in 2006) and is held the following Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Marshals around the course 'Close the Roads' at 6pm and practising begins at 6.15pm, with roads re-opening to the public at around 8.15pm. Practice is split into two 'groups' – 'All classes except Classic and Ultra Lightweight' and 'Classic and Ultra Lightweight only.' Session times are 6.15pm to 7.10pm and 7.15pm to 8.10pm and throughout the course of the week these groups interchange between the sessions, so for example Classic/Ultra L'Weight may start at 6.15 on Monday and 7.15 on Tuesday.