A trial set containing two SiS energy gels. Ideal for anyone trying Science in Sport gels for the first time and looking to find out how well the products suit their individual fuelling needs. What's included? SiS GO Isotonic Energy Gel — 1 gel; SiS GO Energy + Caffeine Gel with 75 mg of caffeine — 1 gel. The isotonic gel does not need to be taken with water. The caffeine gel provides 75 mg of caffeine to help support concentration and alertness towards the end of a race or training session. IMPORTANT We do not recommend trying sports nutrition from any brand for the first time on race day. Test every new product during training, ideally during a long session. This will help you understand how your body responds and reduce the risk of unexpected problems during your event.

Every set now comes in individual packaging with an on-course fuelling plan! Fast delivery guaranteed! The SiS Half Marathon Nutrition Set is designed for runners aiming to achieve their best over 21 km. It includes products covering three essential needs for the distance: hydration, energy and recovery. What's in the set? Energy Bar : a convenient carbohydrate snack to eat around 30 minutes before the start. SiS GO Isotonic Energy Gel — 1 gel; SiS GO Energy + Electrolyte Gel — 1 gel; SiS GO Energy + Caffeine Gel with 75 mg of caffeine — 1 gel for an energy boost over the final kilometres. Within 30 minutes of finishing, we recommend taking 30 g of SiS REGO Protein Powder to support recovery. Add the powder to a bottle of water and shake well. Free gift: every set includes a wristband showing when to take each gel during the race — 1 wristband. How to fuel for a half marathon On race morning, after breakfast, eat a carbohydrate bar for energy and drink 150–200 ml of SiS GO Electrolyte isotonic drink to top up your electrolytes. Take the first isotonic gel at around kilometre 5–6 and the second at around kilometre 12–13. You do not need to take them with water, but remember to drink at aid stations. Take the caffeine gel at around kilometre 16–17 to help you stay focused and increase your pace towards the finish. After finishing, take SiS Cherry Juice to support recovery. To restore fluid balance, use a Science in Sport electrolyte drink for 3–5 hours after the half marathon. Additional advice Remember that SiS sports nutrition is not a substitute for a balanced, healthy diet. Plan your meals several days before the half marathon and include carbohydrate loading, fruit and vegetables. After finishing, eat foods rich in protein, fibre and vitamins. The plan below shows the recommended sports nutrition before, during and after the race. You can also buy 42 km marathon sets and half-Ironman nutrition packs on our website. 21 km fuelling plan Read more about half marathon nutrition in our blog .

Every set now comes in individual packaging with an on-course fuelling plan! Fast delivery guaranteed! The SiS Marathon Nutrition Set brings together fuel for before, during and after a 42 km race. Sports nutrition for a marathon SiS GO Energy Bar — eat after breakfast or approximately one hour before the start for extra carbohydrate. SiS GO Isotonic Energy Gels — use around km 7–8 and km 12–13. They can be consumed on the move without immediately drinking water — 2 gels. SiS GO Energy + Electrolyte Gels — use around km 17–18 and km 22–23 — 2 gels. SiS GO Energy + Caffeine Gels with 75 mg caffeine — use around km 27–28 and km 32–34 — 2 gels. Within 30 minutes after the finish, mix 30 g of SiS REGO Protein Powder with water and shake well. Free gift: a wristband showing the suggested timing for each gel — 1 wristband. How to fuel a 42 km race Your pre-race diet should include familiar sources of simple and complex carbohydrate. On race morning, the source suggests 1.5–3 g of carbohydrate per kilogram of body mass and avoiding unusually high-fibre foods. After finishing, include fruit, vegetables and protein-rich foods. Use aid stations for regular small drinks of water. Plan carbohydrate loading for one or two days before the event. Test every product and the complete timing plan in training. Sports nutrition does not replace a varied, balanced diet. You may also use SiS GO Electrolyte before the race. The source suggests 500 ml after breakfast, approximately 2.5–3 hours before the start, followed by 150–200 ml between 30 and 90 minutes before the race. Adjust fluid intake for your individual sweat rate and conditions. New to long-distance SiS fuelling? Read our running tips .

The SiS audax and cycle-marathon set provides a practical selection of sports nutrition for several hours in the saddle. It combines fast carbohydrate, electrolytes, fluid, caffeine and post-ride protein. What to use and when SiS GO Isotonic Energy Gel provides 22 g of carbohydrate in an easy-to-carry format. Use one during the first hour — 1 gel. SiS GO Energy + Electrolyte Gel — 1 gel. WT Fuel 80 provides electrolytes and 80 g of carbohydrate per serving. Many experienced audax riders carry two bottles, filling one with plain water. Two SiS GO Energy Bars , each providing 26 g of carbohydrate, offer a solid-food option on the ride. SiS GO Energy + Caffeine Gel with 75 mg of caffeine — 1 gel, suggested approximately one hour before the finish. Within 30 minutes after finishing, mix 30 g of SiS REGO Protein Powder with water and shake well. Try the set on a long training ride A 200 km audax requires a clear route-specific plan for food and fluid. This set may suit riders targeting approximately six hours of hard work or seven to nine hours at an aerobic pace. For nine hours or longer, plan additional meals, snacks and water. Practise the complete plan in training and adjust quantities to your speed, body size, tolerance, weather conditions and access to controls or shops.