Chewable Energy Alternative for Trail Running: Why Trail Runners Are Ditching Gels
TL;DR — Gels work on paper. On technical terrain, with full hands and an upset stomach, they work less well. A chewable energy alternative provides the same 2:1 glucose-fructose ratio in a format that aligns with how trail runners move: pre-portionable, no tearing open packaging on a climb, no water needed for consumption. Each 25g Eagle fruit performance bar delivers 20g of carbs. Combine with an isotonic sports drink for 40 to 60g per hour on the trail.
Gels work on paper. But on technical terrain, with a full stomach and sticky hands, they don't always work. A chewable energy alternative for trail running provides the same 2:1 glucose-fructose ratio in a format that truly matches how trail runners move. In the complete guide to energy bars for athletes, you can read how the broader fueling picture works. Here, we're focusing on one specific question: why are trail runners ditching gels, and what works better?
Why are trail runners ditching gels during a trail run?
The frustration is concrete and widespread. On forums and communities like Trail.nl, the same issues are consistently raised: gels cause stomach problems, stick to fingers, require water, and are difficult to dose on a technical section. Trail running is not a road race. The terrain demands concentration. Both hands are sometimes needed. Opening a gel on a rocky descent is not an option — it's a risk.
Three structural problems consistently emerge. Stomach comfort: the high concentration of fast sugars in a gel — without a solid structure — hits the stomach lining hard during exertion above 70% of your maximum heart rate. Dosing: one gel is tied to one amount. You take all or nothing. No control over intake per climb or descent. Format: liquid, sticky, dependent on water. On a long trail without regular water stops, that's a combination that goes wrong.
The result: runners are looking for a natural alternative that provides the same carbohydrates without the drawbacks of the gel format. You can read more about this direct comparison in energy bar vs. energy gel: when to use what.
How many carbohydrates do you need during a trail run?
For exercise lasting longer than 75 minutes, carbohydrate intake during the activity is performance-determining. Under 60 minutes, the internal sugar reserves in your muscles and liver are usually sufficient. Above that, the demand for external carbs quickly increases.
The type of carbohydrate makes a fundamental difference. A 2:1 glucose-fructose ratio increases absorption rate in the intestine because two transport channels work in parallel: SGLT1 for glucose, GLUT5 for fructose. Together, they process up to 90g of carbs per hour, compared to 60g with glucose alone. That is the scientific basis behind the 2:1 principle — and it's the same ratio I apply in every Eagle fruit performance bar. The gel principle works. The format doesn't always. The full explanation can be found in the complete guide to the 2:1 glucose-fructose ratio.
For trails lasting 60 to 180 minutes, 40 to 60g of carbs per hour is a realistic and stomach-friendly goal. Each 25g Eagle fruit performance bar delivers 20g of carbs. That means 1 bar per hour as a fixed component, combined with an isotonic sports drink (500ml/hour for about 30-35g of carbs) for the total. Never more than 2 bars per hour. For ultra-distances over 3 hours, the demand increases to 60 to 90g per hour — then the combination with sports drink and possibly gel becomes more relevant in the crucial final kilometers.
What is the difference between a gel and a chewable energy alternative for trail running?
| Characteristic | Gel | Eagle fruit performance bar |
|---|---|---|
| Format | Liquid, sachet | Chewable, 25g bar |
| Carbohydrates | 20 to 25g | ~20g (80g/100g) |
| 2:1 ratio | Varies by brand | ✅ Always 2:1 |
| Water needed | Yes, recommended | No |
| Stomach comfort at high intensity | Risk of stomach issues | Better due to gradual absorption |
| Dosing | All or nothing | Chewable, self-paced |
| Artificials | Often present | 0% artificials |
| Ease of use on technical terrain | Low | High |
Why does chewing work better than swallowing during trail exertion?
Chewing activates saliva production and starts carbohydrate digestion in the mouth via an enzyme in saliva that begins to break down starch. This is not a minor detail — it gives the gastrointestinal tract more time to process incoming carbohydrates before they reach the small intestine. With a gel, you swallow a concentrated portion that lands directly on the stomach wall.
During trail running, blood circulation primarily serves the working muscles. Blood flow to the gastrointestinal tract decreases by 60 to 80% during high exertion. This makes the digestion of large, concentrated amounts of sugar more difficult. A chewable format spreads the intake and reduces the load per moment. Less peak, less risk, smoother absorption.
Additionally, chewing provides sensory input that can positively influence the perception of effort. This is an additional benefit, not a primary claim. But it partly explains why trail runners find the chewable format more comfortable on sessions of 2 hours or more.
How to integrate a chewable energy alternative into your trail running strategy?
Nutrition strategy on the trail differs from road races. There are no fixed aid stations every 20km. Pace varies greatly depending on the terrain. The mental demands of technical running leave less room for complex intake routines. Simple is better. Consistent is essential.
A workable approach for trails lasting 60 to 180 minutes:
- Start with carbohydrates after 30 to 45 minutes — not earlier, unless the intensity is high from the start.
- Eat on a calm section — a technical climb or rocky descent is not the moment. Flat section, walking pace on a steep incline, or at the top of a climb.
- Aim for 40 to 60g of carbs per hour through a combination: 1 Eagle bar (20g) plus 500ml of isotonic sports drink (~30g). This is the safe zone for most trail runners at moderate to high intensity.
- Pre-portion — break the bar into pieces and store them loosely in a side pocket of your running vest. No tearing open packaging on a descent.
- Drink water separately from intake — a fruit performance bar does not require water to consume, but hydration remains essential for performance and absorption.
On trails longer than 3 hours, where carb needs increase to 60 to 90g per hour, add a second bar (total 2 bars per hour, 40g) and increase sports drink to 700 to 800ml. In the final kilometers at high intensity, a gel as a supplement is a valid choice — then the stomach is under heavy strain and liquid works faster. You can read more about this tactical choice in energy bar vs. energy gel: when to use what.
When is a fruit performance bar the better choice over a gel on the trail?
Not every context demands the same product. A gel has advantages in specific situations: at very high intensity where chewing is physically more difficult, or in the final kilometers of a race where liquid carbs are available faster. This honesty is part of a no-nonsense approach.
For the majority of trail runners, on sessions of 60 to 240 minutes, on technical terrain with variable intensity, the chewable format is practically superior. No water needed for consumption. No sticky hands on technical terrain. Self-determination of dosing pace. Better stomach comfort due to gradual absorption. Clean label without artificials.
The carbohydrate delivery is functionally equivalent to a gel. The user experience is structurally better on the trail. That is the core of the argument. Trail runners who ditch gels are not ditching carbohydrates during exertion. They are looking for a format that suits their sport. View all available flavors in the full Eagle range and choose the variant that suits your training rhythm.
Why is clean label fuel relevant on the trail?
Each bar is 0% artificial, vegan, gluten-free, and lactose-free. The ingredients do what they are supposed to do: deliver carbohydrates in the right ratio, at the right time, without additives that disrupt intestinal absorption or upset the stomach. No synthetic flavors. No preservatives that do not belong in sports nutrition.
On a 4-hour trail, taste is also performance. Athletes who are disgusted by their fuel will consume less — and therefore perform less. A fruit base that still tastes pleasant after hour three is functionally superior to an artificial sugar concentration that becomes tiring after the first hour. Fruit as a carbohydrate source also provides organic acids and a flavor profile that remains appealing. Read more about why fruit is the most logical base for 2:1 fuel in why athletes are swapping gels for clean-label fruit energy bars.
No gel. No compromise. Fuel on the trail.
The trail punishes bad choices. A gel that your stomach can't handle at kilometer 25 of a 50K costs you more than a race position. It costs you the ability to keep moving. A chewable alternative that your stomach can handle, that you can pre-portion, and that utilizes the same 2:1 transport physiology, is not a luxury. It is the logical choice for the long haul. Fuel your flight.
Scientific basis
Jeukendrup & Moseley (2010) — Combined glucose-fructose intake via dual transporter activation (SGLT1 + GLUT5) significantly increases total carbohydrate absorption above the classic glucose ceiling of 60g per hour. The GLUT5 transporter is adaptable via regular fructose intake. Scandinavian Journal of Medicine & Science in Sports. doi:10.1111/j.1600-0838.2008.00862.x
Currell & Jeukendrup (2008) — Trained athletes who ingested a 2:1 glucose-fructose mix performed 8% better in a concluding time trial than the glucose group, with simultaneously fewer gastrointestinal complaints at similar total carb intake. Medicine & Science in Sports & Exercise. doi:10.1249/mss.0b013e31815adf19
References:
- Jeukendrup AE, Moseley L. Multiple transportable carbohydrates enhance gastric emptying and fluid delivery. Scand J Med Sci Sports. 2010;20(1):112-121. doi:10.1111/j.1600-0838.2008.00862.x
- Currell K, Jeukendrup AE. Superior endurance performance with ingestion of multiple transportable carbohydrates. Med Sci Sports Exerc. 2008;40(2):275-281. doi:10.1249/mss.0b013e31815adf19
Frequently Asked Questions
Why are trail runners increasingly choosing a chewable alternative over a gel?
Gels present practical problems on technical terrain: you need both hands, the consistency is difficult to dose, and many runners experience stomach issues due to the concentrated sugars. A fruit performance bar gives you control over the pace of intake. You chew, you determine your own portion, your stomach adapts more easily.
What is the difference between a gel and a fruit performance bar in terms of carbohydrate absorption?
Both contain the 2:1 glucose-fructose ratio that enables optimal carb absorption during exercise via two intestinal channels simultaneously. The difference lies in the matrix: a fruit performance bar delivers 80g of carbohydrates per 100g in solid form, without artificials. The gradual absorption through chewing reduces the risk of stomach issues at high intensity.
How do I use a fruit performance bar as fuel during a trail run?
Take 1 bar per hour combined with 500ml of isotonic sports drink for approximately 50g of carbs per hour. Pre-portion the bar into pieces in your vest. Eat on flat sections or at the top of a climb — not on technical terrain. Start after 30 to 45 minutes. For trails over 3 hours, increase to 2 bars plus more sports drink for 60 to 75g per hour.
Is a fruit performance bar suitable for trail runners with a sensitive stomach?
Yes. The bar contains no artificials, no artificial sweeteners, and no synthetic flavors. The clean label makes the bar functional for runners who experience stomach issues with gels. The solid form spreads absorption and reduces the peak load on the stomach during exercise. Vegan, gluten-free, and lactose-free.
What makes a chewable energy alternative better than a gel specifically for trail running?
Trail running demands more from your coordination, focus, and hand use than road running. Opening a gel on a rocky path or steep climb is a risk. A fruit performance bar can be broken into pieces beforehand, has no packaging to tear open, and leaves no sticky residue. The fruit base still tastes pleasant after three hours, which actually encourages trail runners on ultra-distances to eat — and thus to perform.
How many carbs do I need per hour during a trail lasting 2 to 4 hours?
For 60 to 180 minutes at moderate to high intensity: 40 to 60g of carbs per hour. This can be achieved with 1 Eagle bar (20g) plus 500ml of isotonic sports drink (30-35g). For trails over 3 hours at high intensity: 60 to 90g per hour via 2 bars (40g) plus 700 to 800ml of sports drink (45-50g). Never more than 2 bars per hour.
Do I need to drink water with a fruit performance bar?
No, the bar does not require water for consumption — that is a direct advantage over gels. Hydration itself remains essential for performance and carbohydrate absorption in the gut. Drink 400 to 700ml of water or sports drink per hour separately from bar intake, depending on temperature and perspiration.
Most trail runners don't stop using gels because they don't work. They stop because they don't work on technical terrain. Chewable, pre-portioned, no foil on a climb. 1 bar per hour plus sports drink. 50g carbs. 2:1. No artificials. That's the difference.Your stomach has no problem with carbs during exercise. Your stomach has a problem with what's alongside those carbs. Artificial sweeteners. Synthetic flavourings. A concentrated liquid on an empty stomach at 75% HRmax. A fruit performance bar is a different story. Clean. Chewable. Same 2:1 ratio.80g carbohydrates per 100g. 2:1 glucose-fructose. 25g per serving. No water needed. No sticky fingers. The same carbs as a gel — in a format that works when your hands are full on a technical descent. Eagle fruit performance bar. Fuel your flight.-->
