SIS

Long trails require a well-filled energy reservoir. With the gels, sports drinks and electrolytes from SiS — Science in Sport — you can tailor your nutrition to your training or competition. From a gel on the go to BETA Fuel for long efforts: choose your fuel and hit the trail prepared.

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  • SIS Beta Fuel Gel (40g Carbs)

    Energy gel for long trail runs, marathons and ultras

    60 g

    Regular price € 295
    Unit price295 / item
  • SIS Beta Fuel Gel + Electrolytes (40g Carbs)

    Energy gel with electrolytes for long trail runs and warm conditions

    60 g

    Regular price € 315
    Unit price315 / item
  • SIS Beta Fuel Gel + Nootropics (40g Carbs)

    Energy gel with 40 g carbohydrates for long trail runs and ultras

    60 g

    Regular price € 315
    Unit price315 / item
  • SIS Beta Fuel Energy Chews (45g Carbs)

    Energy chews for trail runs, ultras and long endurance sports

    60 g

    Regular price € 395
    Unit price395 / item
  • SIS Go Energy Bar (26g Carbs) | trrail.com
    New arrivals

    SIS Go Energy Bar (26g Carbs)

    Soft energy bar for the first hours of long exertions

    40 g

    Regular price € 219
    Unit price219 / item
  • SIS Beta Fuel 80 Energy Drink (80g Carbs)

    Energy drink with 80 g carbohydrates for ultras and long trail runs

    Regular price By € 375
    Unit price375 / item
  • SIS Go Electrolyte Powder (36g Carbs) | trrail.com
    New arrivals

    SIS Go Electrolyte Powder (36g Carbs)

    Sportdrank met elektrolyten voor lange trailruns en duurtrainingen

    Regular price By € 1995
    Unit price160 / item
  • SIS Beta Recovery (30g Proteïne) | trrail.com
    New arrivals

    SIS Beta Recovery (30g Protein)

    Recovery shake voor herstel na lange en intensieve duurtrainingen

    500 g

    Regular price € 2995
    Unit price599 / item
  • SIS Hydro+ Electrolyte Drink Mix (350mg Natrium) | trrail.com
    Sold out
    New arrivals

    SIS Hydro+ Electrolyte Drink Mix (350mg Sodium)

    Elektrolytendrank voor hydratatie tijdens trailrunning en duurtraining

    27 g

    Regular price € 995
  • SIS Go Isotonic Energy Gel (22g Carbs) | trrail.com
    Sold out

    SIS Go Isotonic Energy Gel (22g Carbs)

    Isotonic energy gel for trail runs, marathons and long runs

    420 g

    Regular price € 1750
    Unit price250 / item
SIS

SIS

(10 products)

SiS sports nutrition for trail running and long distance runs

A long climb, hours on the road, or plenty of kilometers to the next aid station: you want your nutrition taken care of. SiS, short for Science in Sport, offers sports nutrition that allows you to easily carry carbohydrates and electrolytes. Choose the gels and drink mixes that suit your distance, effort, and preference.

Which SiS gel suits your run?

Do you want to easily replenish carbohydrates on the go? The SiS GO Isotonic Energy Gel Provides 22 grams of carbohydrates per gel. Handy when you want to distribute your energy over multiple intake moments.

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

BETA Fuel: more carbohydrates in your flask

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

A drink mix makes it easier to spread your intake over time. Combine drinks and gels based on your nutrition plan and choose a flavor you still enjoy drinking several hours later.

Sports drink or electrolytes: choose what you need

Do you want to replenish both energy and electrolytes with your drink? SiS GO Electrolyte Combines carbohydrates and electrolytes in one sports drink. Practical if you want to carry both in your water bottle or soft flask.

An electrolyte mix such as SiS Hydro+ It fits perfectly with a plan where you get your energy primarily from gels, bars, or other food. So, when making your choice, consider your overall nutrition plan: how many carbohydrates are you already consuming, and what do you want to replenish through your drinks?

Make your competition nutrition familiar during your training

The best nutrition for your trail run is nutrition you enjoy consuming on the go. Therefore, try your SiS gels and sports drink during long training runs. This way, you will discover which flavors, combinations, and timings work for you.

Stock up for your next long run and practice with the nutrition you also want to use on race day.

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