SiS sports nutrition for trail running and long runs

A long climb, hours on your feet or plenty of kilometres to the next aid station: that's when you want your fuelling sorted. SiS, short for Science in Sport, offers sports nutrition that makes it easy to carry carbohydrates and electrolytes. Choose the gels and drink mixes that suit your distance, effort and taste.

Which SiS gel suits your run?

Want an easy way to top up carbs on the go? The SiS GO Isotonic Energy Gel delivers 22 grams of carbohydrates per gel. Handy when you want to spread your energy over several intake moments.

For longer efforts or a fuelling plan with more carbs there is the SiS BETA Fuel Energy Gel. It contains 40 grams of carbohydrates per gel, from maltodextrin and fructose in a 1:0.8 ratio. That way you carry more carbs per pack for your long run, marathon or ultra.

BETA Fuel: more carbs in your flask

Prefer to get part of your energy from your drink? SiS BETA Fuel 80 delivers 80 grams of carbohydrates per serving. The drink mix combines maltodextrin and fructose in the same 1:0.8 ratio as the BETA Fuel gels.

A drink mix makes it easier to spread your intake over time. Combine drinks and gels according to your fuelling plan and choose a flavour you still enjoy after several hours.

Sports drink or electrolytes: choose what you need

Want to replace both energy and electrolytes with your drink? SiS GO Electrolyte combines carbohydrates and electrolytes in one sports drink. Practical if you want both in your bottle or soft flask.

An electrolyte mix such as SiS Hydro+ suits a plan in which you get your energy mainly from gels, bars or other food. So look at your total fuelling plan: how many carbs are you already carrying, and what do you want to top up through your drink?

Get used to your race fuel in training

The best fuel for your trail is fuel you're happy to take on the way. So try your SiS gels and sports drink during long training runs. That's how you find out which flavours, combinations and timings work for you.

Stock up for your next long run and practise with the fuel you want to use on race day.

Popular at Trail.nl: the SiS BETA Fuel Gel + Electrolytes, with electrolytes on top of 40 grams of carbohydrates. Compare SiS with other brands in our energy gels collection.