Her Royal Highness the Queen turns 90 this Thursday 21st April and to mark the occasion Human Race are offering anybody who signs up to the ever-popular Windsor Triathlon on 21st April a free Science in Sport (SiS) Nutrition pack worth £18.99.

The renowned Windsor Triathlon is taking place on Sunday 12th June with the iconic run route taking you around the Queen’s favourite royal residence, Windsor Castle. This historic event offers triathletes various distances including the choice of the sprint (750m swim, 30k bike, 5k run) or the popular Olympic distance (1,5k swim, 42k bike, 10k run). All triathletes have the opportunity to run alongside the illustrious Windsor Castle and see where the Queen plans on spending her 90th birthday.

To get your hands on one of the SiS Nutrition Cycling or Running kits and wish the Queen a very Happy Birthday, sign up to the Windsor Triathlon on 21st April.

About SiS Nutrition Kits

Running includes:
2x GO Energy Lemon Sachets
1x REGO Rapid Recovery Chocolate Sachet
4x GO Isotonic Energy Gels (2x Orange flavour and 2x Pineapple)
1x GO Energy + Electrolyte Gel Raspberry
2x GO Electrolyte Tropical Sachets
1x 400ml Limited Edition Running Bottle

Cycling includes:
2x GO Energy Lemon Sachets
1x REGO Rapid Recovery Chocolate Sachet
(2x Orange flavour and 2x Pineapple)
1x GO Energy + Electrolyte Gel Raspberry
2x GO Energy Bar Apple & Blackcurrant
1x 550ml Limited Edition cycling bottle