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September 6, 2026

Neversecond C30 Energy Gel Review: The Full RunMorph Test

7.3/10
Neversecond C30 Energy Gel Review: The Full RunMorph Test
  • Digestion praised unanimously by every source we checked, even at a double dose
  • Runny texture that goes down without water, even in the cold
  • Scientifically documented 2:1 ratio, in line with the market benchmarks
  • Packaging several testers found hard to open, especially with sweaty hands

Most French runners have never heard of it, yet this brand sponsors Jim Walmsley and Katie Schide, two of the most decorated names in world trail running. Neversecond lands in France with an unusually formatted gel and a clear promise: science first, marketing second.

Neversecond C30 Energy Gel, Lemon flavor

© Neversecond, official photo used for editorial purposes

The bottom line in 3 sentences

The Neversecond C30 Energy Gel delivers 30 g of carbs and 200 mg of sodium in a runny texture designed to keep gut trouble at bay. Testers agree on flawless digestion and steady energy, but several of them found the packaging hard to open, and the price climbs to 3.50 euros a gel. A solid, science-driven gel for runs of 40 minutes to 2 hours, less relevant for an ultra where every euro and every gram counts.

7.3
/ 10 · RunMorph overall score
Taste
7.5 / 10
Digestibility
8.5 / 10
Carbs/sodium content
7 / 10
Format/practicality
6 / 10
Value for money
5.5 / 10
Who is it for?Runners with a sensitive stomach who want a formula built around digestion first, for runs of 40 minutes to 2 hours.
Who should skip it?Runners counting every cent on an ultra fueling plan, or anyone who hates having to look down at a gel to open it mid-run.

Neversecond, the brand the pros knew before French runners did

Founded by Bill Armstrong, a former distance runner turned entrepreneur, Neversecond built its range with Asker Jeukendrup, a sports nutrition researcher whose work on carbohydrate absorption during exercise has been the benchmark for twenty years. The brand openly puts research ahead of marketing, and its very name sums it up: science comes before everything else.

On the results front, the argument lands. Katie Schide has tied the brand to her wins at Western States 100 and UTMB, Jim Walmsley has used it since his Ultra-Trail Australia record, and the EF Education and Bahrain Victorious cycling teams build its products into their race plans. That sporting success is in sharp contrast with the brand's low commercial profile in France, where it trickles out through a handful of specialist endurance nutrition retailers rather than mainstream sports chains.

Neversecond C30 Energy Gel specs

BrandNeversecond
ModelC30 Energy Gel
Format60 ml soft pouch
Carbohydrates30 g (2:1 maltodextrin/fructose ratio)
Sodium200 mg
Calories120 kcal
Fat / protein0 g / 0 g
Caffeine0 mg (caffeinated version with 65 mg available)
FlavorsLemon, Berry, Passion Fruit, Fruit Punch, Orange, Watermelon
CertificationAnti-doping tested (Informed Sport program)
Price3.50 euros per gel (pack of 12 for 42 euros on the official European store)

C-Series technology: a modular system, not a standalone product

The C30 is just one building block of a bigger system. Neversecond designs its range around a simple principle: every product (gel, drink or bar) delivers a multiple of 30 g of carbs, so you can plan your fueling by stacking blocks instead of juggling mismatched doses from one brand to the next. The C90 drink, more concentrated at 90 g of carbs per sachet and designed for pre-race carb loading, complements the C30 without any overlap.

The 2:1 maltodextrin to fructose ratio is the scientific backbone of the whole range. This ratio, widely documented in endurance nutrition research, uses two different intestinal absorption pathways in parallel, which limits how much carbohydrate sits in your stomach and cuts the risk of gut distress at high intensity. It is exactly the reasoning already used by Maurten with its hydrogel and SiS with its Beta Fuel, but Neversecond bets on a runnier texture than both rivals, almost as liquid as an isotonic drink.

Neversecond C30 Energy Gel, Berry flavor

© Neversecond, official photo used for editorial purposes

RunMorph tip: if you run for more than 90 minutes, pair the C30 with a carb-free drink rather than another sugary gel. Its sodium dose (200 mg) is modest next to the 300 to 500 mg claimed by products built for the heat like the SiS Beta Fuel, so plan on extra electrolytes for hot or long outings.

Field test: what independent testers report

Neversecond is still too new on the French market to have racked up the usual hands-on reviews from specialist sites. Our research found a real-world test published by a French endurance nutrition retailer (Top Tri), which used the full range for several weeks across runs of varying intensity, backed up by a testing campaign involving more than fifteen American amateur runners who received trial packs and posted their individual feedback.

On digestion, both sources agree completely: the French tester describes a C90 drink that mixes easily and never turns sickly, even at a double dose in one bottle, and the fifteen American testers unanimously report steady energy, with no crash and no spike. Several of them specifically point out that there is no sticky residue in the mouth, unlike thicker gels on the market.

On taste, opinions split. The French tester finds the Lemon and Mixed Berry flavors light and not too sweet, fine for daily use. The American testers, on the other hand, describe fairly bold flavors, with a clearly noticeable salt hit that fans of sweet and salty contrast see as a strength, but that runners sensitive to strong flavors find too intense. This gap probably comes down to personal taste rather than batch differences.

The weak spot is the packaging. Several American testers report real trouble tearing the pouch open, especially with sweaty hands mid-run, including one case where the gel stayed stuck inside during a training run. The French tester does not mention the problem, which points to a batch-dependent defect rather than a built-in design flaw, but the complaint comes up often enough that you should test it yourself before any race that matters.

Neversecond C30 vs Maurten Gel 160: head to head

Neversecond C30Maurten Gel 160
Carbohydrates30 g40 g
TextureRunny, almost liquidThick hydrogel
Sodium200 mgNot disclosed (low)
Price per gel3.50 eurosAbout 3 euros
PositioningEveryday use, short to medium runsMarathon and long races

Both products share the same hydrogel/isotonic logic to lighten the load on your gut, but they target different uses. The Maurten packs more carbs into a denser format, designed to cut the number of feeds over a marathon. The Neversecond, with its 30 g and runnier texture, is closer to an everyday training or short race gel, where easy digestion matters more than maximum energy density.

Neversecond C30 Energy Gel, Fruit Punch flavor

© Neversecond, official photo used for editorial purposes

Pros and cons

Pros
  • Digestion praised unanimously by every source we checked, even at a double dose
  • Runny texture that goes down without water, even in the cold
  • Scientifically documented 2:1 ratio, in line with the market benchmarks
  • Modular C-Series range that makes building a full fueling plan simple
Cons
  • Packaging several testers found hard to open, especially with sweaty hands
  • High price (3.50 euros per gel) against French benchmarks at 1.50 to 2 euros
  • Modest sodium (200 mg) that needs topping up on hot runs
  • Still limited distribution in France, mostly through specialist retailers

Our field verdict: who is it for?

The Neversecond C30 is aimed first at runners who have already had gut trouble with more traditional gels and want a formula built with the stomach as the top priority. On a long run or during a half marathon build, pairing it with a carb-free sports drink lets you fine-tune your intake without piling up different sugar sources.

The right RunMorph plan: for a half marathon or marathon build where race fueling matters as much as mileage, check out the RunMorph training plans and practice your carb intake on the long runs in the program instead of trying a new product on race day.

Neversecond C30 Energy Gel, Orange flavor

© Neversecond, official photo used for editorial purposes

RunMorph Coach verdict

The Neversecond C30 Energy Gel delivers on its main promise: flawless digestion, confirmed by French and American sources that never compared notes. It is an honest gel, built on a credible scientific foundation rather than a marketing pitch. But at 3.50 euros a gel, and with packaging that tripped up several testers mid-effort, it is not an obvious pick against cheaper French rivals that are already well established.

7.3/10: a very good product for your gut, held back by its price and a design detail that should never have made it past testing.

Key takeaways for your training

  • 30 g of carbs and 200 mg of sodium: a dose built for everyday use, not for ultras or extreme heat without extra support
  • 2:1 maltodextrin/fructose ratio: the same logic as Maurten and SiS to limit gut distress during exercise
  • Test the packaging before race day: several reports flag a hard-to-open pouch with sweaty hands
  • 3.50 euros a gel: budget for it if you take several on a long run
  • Modular C-Series range: handy for building a full fueling plan without switching brands
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