The Royal Family will show their support for the London Games on the first full day of competition as they visit the Olympic Park and cheer on GB medal hopefuls.
The Queen and the Duke of Edinburgh will attend the Olympic Park and be given a tour of the site, which has been transformed over the last few years.
Meanwhile, the Duke and Duchess of Cambridge are expected to attend the equestrian competition taking place in Greenwich Park.
The Cambridges, who with Prince Harry are Team GB ambassadors, will have a chance to see Zara Phillips, the Queen's granddaughter, compete.
Meanwhile the Prince of Wales and Duchess of Cornwall will watch the riders set off at the men's cycling road race, which starts and finishes on The Mall and will pass Buckingham Palace.
Isle of Man cyclist Mark Cavendish is one of the favourites to win gold, with Londoner Bradley Wiggins also competing just six days after his historic first win for a British rider at the Tour de France.
During their visit to the Olympic Park in Stratford, the Queen and the Duke of Edinburgh will watch some of the first heats of the swimming.
They will be taken to the top of the towering ArcelorMittal Orbit sculpture, where prize-winning artist Anish Kapoor, who co-created the artwork, will be on hand to discuss the project together with London mayor Boris Johnson.
The royal couple will be joined during their visit by the Princess Royal - president of the British Olympic Association and a member of the International Olympic Committee - and her husband, Vice Admiral Sir Tim Laurence.
In the athletes' village competitors may get a surprise as the royal party will tour the canteen, view an apartment and meet Team GB sportsmen and women. Lord Coe, London 2012 chairman, and Sir John Armitt, Olympic Delivery Authority chairman, will host the visit. Later the Queen will celebrate the 25th anniversary of nearby London City Airport by meeting long-serving staff and Paralympic swimmer Amy Marren.