Energy Gel Alternatives: What to Use When Gels Fail
By James Frost, Founder of Flaming Phoenix. Phoenix Bars have been used on Marathon des Sables, Aconcagua, ocean rows, and ultra cycling events from the Sahara to the Arctic.
Last updated: May 2026
The short answer
Energy gels work for short, fast efforts. They fail for predictable reasons: gut distress, flavour fatigue, sugar crashes, packaging waste, freezing in the cold, and a poor calorie-to-weight ratio for any effort longer than a few hours. The alternative most endurance athletes need is a calorie-dense solid food that delivers gel-level carbs without the gel-level problems.
Phoenix Bars were built for that gap. 66g of carbohydrate, 557 calories, 4.6 calories per gram, soft texture in sub-zero conditions, two-year shelf life, six flavours. The rest of this page explains when gels fail, why most "alternatives" don't actually fix the problem, and how Phoenix Bars solve it.
Why people quit energy gels: the seven real reasons
"I just don't like gels" is almost never the real answer. After a decade of supplying ultra athletes, polar expeditioners, and mountaineers, I see the same seven specific complaints. The right alternative depends on which one you have.
Gut distress. The most common. Maltodextrin and concentrated fructose in most gels are high-osmolality, which pulls water into the gut and triggers cramping, bloating, and toilet stops. Solid food empties the stomach more slowly and avoids the sugar bolus.
Flavour fatigue. After 4 to 6 hours of sweet gels, the brain physically cannot accept another one. Athletes stop eating not because they aren't hungry but because they cannot stomach another sweet sachet. This is the biggest cause of ultra-distance bonking, and it's why Phoenix Bars come in six flavours including non-sweet options like Salted Caramel and Ginger.
Sugar crashes. Pure-glucose gels spike blood sugar then crash within 30 minutes. Phoenix Bars use whole-food carb sources for steadier release without the crash.
Cost per calorie. Premium gels run £2 to £3.50 per 100 calories. A Phoenix Bar delivers 557 calories for £4.99, around 90p per 100 calories.
Packaging and waste. Five gel wrappers per 500 calories. One Phoenix Bar wrapper for 557 calories. Trail-friendly, pack-friendly, planet-friendly.
Cold weather failure. Most gels turn to slush or freeze solid below zero. Phoenix Bars stay edible in sub-zero conditions, which is why they end up in jacket pockets on Aconcagua and Denali instead of frozen gels.
Volume and bulk. On expeditions where you carry your own food, gels weigh too much for the calories they deliver. Phoenix Bars at 4.6 cal/g beat gels at around 3 cal/g, and they crush real-food alternatives at 1 to 1.5 cal/g.
Pick the reason that applies to you. The right alternative follows.
What energy gels actually do, and what an alternative needs to match
Before swapping gels for something else, it helps to know what gels do well so you don't downgrade by accident.
A typical gel delivers 20 to 30g of carbohydrate, 80 to 120 calories, fast gastric emptying (15 to 20 minutes), and a small portable form factor. That's the bar a real alternative has to clear.
Most "alternatives" fail this test. A banana delivers 27g of carbs but at 120g of weight, four times the weight of a gel for the same fuel. Energy chews deliver gel-level carbs but with the same flavour fatigue and packaging issues. Drink mixes lock you to a bottle. The few alternatives that actually beat gels on the metrics that matter are calorie-dense solid bars formulated as primary fuel rather than as snacks.
A Phoenix Bar delivers 66g of carbohydrate per 120g bar, more than two gels of carb load in a single eating event, with 557 total calories, soft chewable texture, freeze and heat stability, and a two-year shelf life.
Phoenix Bars: Up to 557 Calories Per Bar
Soft, easy to eat whole or as a warm porridge. Low volume, two-year shelf life. Rated 5.0/5 from 344 reviews. £4.99 per bar.
How Phoenix Bars solve each gel problem
This is the diagnostic shortcut. Match your problem to the answer.
Gut distress with gels. Phoenix Bars empty the stomach more slowly than gels and avoid the maltodextrin spike. Athletes who can't tolerate gels usually tolerate Phoenix Bars without issue. Eat smaller pieces more frequently rather than a whole bar at once.
Flavour fatigue. Six flavours rotate the palate. Salted Caramel and Ginger sit at the savoury end of the range and reset taste fatigue when sweet bars and gels have stopped working. Most ultra athletes carry at least three flavours per event for exactly this reason.
Sugar crashes. Phoenix Bars use whole-food carbohydrate sources, not pure glucose syrups. Energy release is steadier. No crash.
Cost. £4.99 per 557 calories works out at around 90p per 100 calories, less than half the cost of premium gels for equivalent fuel.
Packaging. One wrapper per 557 calories. To match the same calories from gels you'd carry five wrappers. Trail litter and jersey clutter both drop.
Cold weather. Phoenix Bars stay soft and edible in sub-zero conditions. They've been carried to the summit of Everest and used across polar expeditions. Full cold-weather protocol at High Altitude Mountaineering.
Volume and bulk. 4.6 calories per gram is among the highest in any portable solid food. For a multi-day expedition, this is the difference between a manageable food bag and one that breaks your back. See Marathon Des Sables and Ocean Rowing Nutrition for expedition-specific use cases.
Where gels still win, and where Phoenix Bars don't
I'm not going to pretend Phoenix Bars are the right tool for every event. Gels are the better choice for short, fast efforts under 3 hours: marathons, half marathons, criteriums, sprint and Olympic triathlons. A gel takes 20 seconds to consume. A Phoenix Bar takes a few minutes of chewing at race pace. If your event is short and the carbs need to land fast, use the gel.
For everything longer (ultras, mountaineering, multi-day, expedition, ocean), Phoenix Bars are the upgrade.
Match your sport to the right approach
Marathon and shorter (under 4 hours). Stick with gels and drinks. The gel problems aren't fully developed at this duration. Save Phoenix Bars for longer efforts.
Ultra running (4 to 24 hours). Mix gels and drinks for the first 2 to 3 hours, then transition to Phoenix Bars to manage flavour fatigue and gut distress. They sit in a vest pocket without crumbling. Full ultra strategy at Multi-day Ultra Running Nutrition.
Cycling and bikepacking. Cyclists tolerate more variety because there's no impact stress on the gut. For events past 5 hours, Phoenix Bars in a jersey pocket beat the gel-and-bonk cycle. Detail at Cycling and Bikepacking Nutrition.
Mountaineering and high altitude. Gels freeze, drinks freeze, real food turns to ice. Phoenix Bars are the only category I trust above 5,000m because they stay edible at sub-zero temperatures. Full protocol at High Altitude Mountaineering.
Multi-day expedition (Marathon des Sables, polar, ocean rowing). Gels are dead weight. Calorie density is everything. Phoenix Bars deliver 557 calories per 120g, which is what makes the food bag light enough to actually carry.
Triathlon (full distance). Gels on the run leg, Phoenix Bars on the bike. Hybrid strategy.
For practical guidance on using Phoenix Bars during ultras and expeditions (porridge format, breaking into pieces, pre-race prep), see How To Use Phoenix Bars.
What to eat when you're trying to escape gels
If Phoenix Bars aren't immediately available, here's the realistic order of preference.
For race-day fuel that beats gels on most of the seven problems, a calorie-dense solid bar is the answer. Phoenix Bars are the obvious choice. Real food alternatives like Medjool dates, white rice cakes with jam, or Stroopwafels work in a pinch but deliver less than half the carbs per gram and crumble in vest pockets. For the full breakdown of which solid foods actually work mid-effort, see Ultra High Carb Solid Foods.
For drinks-side fuel, electrolyte mixes plus water work fine for hydration but won't cover ultra-distance calorie needs on their own. Use them alongside Phoenix Bars, not instead of them.
Frequently asked questions
What is the best energy gel alternative? For efforts longer than 3 hours, a calorie-dense solid bar is the best alternative because it solves multiple gel problems at once: gut distress, flavour fatigue, cost, packaging, cold weather, and pack weight. Phoenix Bars deliver 66g carbs and 557 calories per 120g bar, which is more carbs than two gels plus enough calories to replace a meal.
Can I use real food instead of gels? Yes, but you'll usually under-fuel. A banana delivers 27g of carbs at 120g of weight, four times the weight of a gel. For cycling and rest stops it works. For running and expeditions it's a poor trade.
Are Phoenix Bars an energy gel alternative? For efforts longer than 3 hours, yes. They deliver more carbs per eating event than two gels, replace a meal as well as a fuel hit, won't freeze, won't melt, and come in six flavours including non-sweet options to manage taste fatigue.
Why do gels cause stomach problems? The maltodextrin and concentrated fructose in most gels are high-osmolality, pulling water into the gut and triggering cramping, bloating, and urgent toilet stops. Solid food avoids the sugar bolus and empties the stomach more slowly, which most athletes tolerate better.
Will Phoenix Bars freeze in the cold? No. Phoenix Bars stay soft and edible in sub-zero conditions, which is why they end up on Aconcagua, Denali, and polar expeditions when standard gels and bars freeze solid.
What can I eat instead of gels on a marathon? Under 4 hours, stick with gels or chews. The gel problems aren't fully developed at marathon distance and switching mid-race usually causes more problems than it solves. Save Phoenix Bars for ultras and longer events.
Are Phoenix Bars cheaper than gels? Yes. £4.99 per 557 calories works out at around 90p per 100 calories. Premium gels run £2 to £3.50 per 100 calories. For a multi-hour effort the cost difference adds up.
Do energy gels expire? Most have an 18 to 24 month shelf life. Phoenix Bars have a two-year shelf life, which matters for expedition planning where food is purchased months ahead.
Related guides
Ultra High Carb Solid Foods | Ultra-Endurance and Expedition Nutrition Guide | Multi-day Ultra Running Nutrition | Cycling and Bikepacking Nutrition | Marathon Des Sables | Ocean Rowing Nutrition | High Altitude Mountaineering | How To Use Phoenix Bars
Flaming Phoenix
