By Ethan BrooksUpdated November 2026
The sis energy gels variety pack is a 14-count assortment of carbohydrate gels from Science in Sport, designed for runners and cyclists who want to test flavors before committing to a larger order. It suits marathoners and half-marathoners who train long, want electrolytes in their fuel, and prefer to sample several flavors during training. It is a weaker fit for athletes who only need a single flavor, want caffeine in every gel, or follow a strict low-sugar or keto approach. Read on for the listing details, performance analysis, and a buying guide.
SiS Science In Sport Running Energy Gels, Full of Electrolytes, Good For Hydration, Flavor Variety Pack, Vegan, Gluten & Dairy Free, 14 x 60ml, Orange
Product Overview
This listing is a variety pack of SiS Science In Sport running energy gels, sold as 14 gels at 60 ml each. The listing name identifies it as a flavor variety pack that includes orange, is vegan, gluten-free and dairy-free, and contains electrolytes intended to support hydration. The product is aimed at endurance runners who need fuel during sessions lasting longer than about 60 to 90 minutes.
Energy gels like these are a common way to deliver fast-acting carbohydrate during exercise. The format is simple: squeeze the gel into your mouth with water, usually at set intervals. For marathon training, many runners use gels during long runs to practice their race-day fueling plan. If you are building that plan from scratch, our guide on When to Take Energy Gels: A Marathoner's Timing Guide explains how to space gels across distance.
Because this is a mixed pack, the main appeal is trying more than one flavor without buying several single-flavor boxes. That matters because gut tolerance varies from person to person, and a flavor that sits well one day may not on another. Testing in training, rather than on race day, is the standard advice from most endurance coaches and sports dietitians.
Key Features & Specifications
The table below lists the specifications that the product name states directly. We have left out any claims we cannot confirm from the listing.
| Feature | Details |
|---|---|
| Brand | SiS (Science In Sport) |
| Product type | Running energy gel, flavor variety pack |
| Quantity | 14 gels |
| Size per gel | 60 ml |
| Flavor noted in listing | Orange (variety pack) |
| Electrolytes | Yes, stated in listing |
| Hydration support | Stated in listing |
| Dietary | Vegan, gluten-free, dairy-free |
Manufacturers of SiS gels generally publish per-gel carbohydrate and sodium values on the packaging and product page. Check the nutrition panel on the specific pack you receive, since formulations and labels can change over time. For a general framework on comparing these numbers across brands, see Running Energy Gels Comparison: 7 Factors to Compare Before You Buy.
Pros & Cons
Pros
- Multiple flavors in one box, so you can test what your stomach tolerates.
- Electrolytes are included, which is useful for longer sessions in heat or when sweat losses are high.
- Vegan, gluten-free and dairy-free labeling makes it accessible for a range of diets.
- The 60 ml format is a common size that is easy to carry in a pocket or race belt.
- Good for training blocks where you want to rotate flavors to avoid palate fatigue.
Cons
- A variety pack means you may end up with several flavors you dislike before finding a favorite.
- Sugar-free or low-carb options are not what this product is built for.
- Caffeine is not part of this listing, so runners who want a caffeine boost will need a separate product such as SiS GO Energy + Caffeine Gel Review: Sis Energy Gels Caffeine Pros and Cons.
- Gels need to be taken with water, and some athletes find that the thick texture is hard to get down without it.
Performance Analysis
Performance from an energy gel depends on three things: how quickly the carbohydrate is absorbed, how much you can take in per hour without gut distress, and whether the electrolytes match your sweat losses. Gels in this category are generally designed to deliver a concentrated dose of carbohydrate in a small volume, which is why they are popular for marathon pacing.
Based on the product description and general patterns in owner feedback for this type of gel, most users appreciate the variety format and the electrolyte content. Common themes include that the flavors are approachable, the gels are easy to swallow with water, and the pack is convenient for trying several options during one training cycle. The recurring complaints tend to center on individual flavor preference and on gut comfort when runners take gels too quickly or without enough water.
The value of a variety pack is mostly in the testing it allows. Run a long session with one flavor, note how you feel at 45 and 90 minutes, then try another flavor on the next long run. Keep a simple log of flavor, time taken, and any stomach issues. Over a few weeks, that log will tell you more than any review. For a timing framework to build around these tests, our step-by-step guide on When to Take Energy Gels During Half Marathon: A Step-by-Step Timing Guide is a useful reference, even if you are training for a full marathon.
If you are considering other SiS formats, our review of SiS GO Energy Gels Review: Features and Performance covers how the GO line differs in packaging and use.
Who Should Buy This Product?
This variety pack suits runners who are still deciding which gel they like, who train for races of half-marathon distance or longer, and who want electrolytes in their fuel. It is also a practical choice for triathletes and cyclists who want a flavor sampler before buying in bulk. If you already know your favorite SiS flavor, a single-flavor box will likely cost you less per gel over time.
You should probably skip this product if you need a specific caffeine dose in every gel, if you follow a very low-carbohydrate diet, or if you only race short distances where gels are not needed. Athletes with diabetes, digestive conditions, or other health concerns should check with a doctor or registered dietitian before adding new sports nutrition products to their routine.
Buying Guide
Before you buy any energy gel, consider five things: carbohydrate per gel, sodium or electrolyte content, caffeine, flavor range, and whether the packaging suits how you carry fuel. Compare the nutrition panel rather than relying on marketing terms. Our broader comparison of formats in Top 6 Energy Gels for Runners Compared in 2026 shows how different products stack up on these points.
If the variety pack does not match your needs, two well-known alternatives are worth considering. The first is a SiS GO isotonic variety pack, which uses a different format and is designed for runners who want a lighter, more fluid option:
SiS GO Isotonic Energy Variety Pack, 2 Fl Oz (Pack of 6)
The second is a Science in Sport fast-absorbing carbohydrate option with a defined maltodextrin-to-fructose ratio, aimed at athletes exercising for more than 90 minutes. The product is well known for its dual-source carbohydrate approach, and the listing specifies 40 g of carbohydrate:
Science in Sport Fast-Absorbing Carbohydrate Energy, 1:0.8 Maltodextrin to Fructose Ratio, 40g Carbs, Exercise Over 90 Min SiS BETA Fuel Dual-Source Isotonic Energy Gel, Strawberry & Lime, 6-Pack
A third option, if you prefer to sample a broader range of brands, is to buy several single-flavor gels from different manufacturers. This gives more variety but usually requires more planning and more packaging waste. Many runners find that once they settle on a gel type, they stick with it for the whole training season.
FAQ
Are SiS energy gels variety packs good for marathon training?
They can be. The variety format lets you test flavors during long runs, which is useful before race day. Always practice your fueling plan in training, not for the first time at the start line.
Do these gels contain electrolytes?
The listing states that they are full of electrolytes and support hydration. Check the nutrition panel on your specific pack for the exact sodium and other mineral content.
Are these gels vegan and gluten-free?
The listing identifies them as vegan, gluten-free and dairy-free. Always read the ingredient list on your own package if you have a medical dietary requirement.
How many gels should I take during a marathon?
Many runners plan for gels at regular intervals, often every 30 to 45 minutes after the first hour, but the right amount depends on your body weight, pace, and tolerance. Test your plan in long training runs first, and consult a sports dietitian if you have questions.
Can I take these gels with water only?
Most gel manufacturers recommend taking gels with water to help absorption and reduce stomach discomfort. Practice this combination during training.
Do these gels have caffeine?
The listing for this variety pack does not mention caffeine. If you want caffeine, look for a separate caffeinated product and test it in training first.
How long do energy gels last once opened?
Once a gel is opened, it should be used promptly and not stored for later. Unused sealed gels should be kept in a cool, dry place and used before the date printed on the package.
Final Verdict
The sis energy gels variety pack is a sensible choice for runners who want to test several electrolyte-containing gels in one box before committing to a favorite. It is most useful during marathon and half-marathon training, where a flavor-by-flavor trial can prevent problems on race day. It is less suited to runners who need caffeine, low-carbohydrate fuel, or only one flavor. Test each gel on your long runs, track how your stomach responds, and choose the flavor that works best for your training plan.
About Ethan Brooks
Ethan Brooks is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.
