During-effort fuel · gel · reviewed 28 Aug 2026
4Endurance 4Energy Gel 28
The largest sachet of any gel here at 66 g, but among the lowest calorie and carbohydrate density per gram of sachet weight — more volume for less fuel, at $0.081 a gram of carbohydrate.
Score breakdown
The overall score is the average of what's below, each measured against every other gel we've reviewed.
28
Weak
Based on 4 of 5 measures ?A dimension a product doesn't declare is left out of its average rather than counted against it -- so this score reflects fewer measures than a product with a full panel.
Carb density ?How much fuel one sachet carries. 90 g is the ceiling here, matching the top of the range cited for multi-transportable-carb intake.23
Sodium ?Sodium carried by the gel itself, on a scale topping out at 1000 mg — the upper end of what's typically lost to sweat in an hour.7
Value (cost/gram) ?Price of one gram of carbohydrate. Not physiological -- a market-based scale from $0.15/g (0) to $0.02/g (100).53
Gut comfort ?A proxy, not a taste or tolerance test: shorter ingredient lists score higher, from 15 ingredients (0) to 1 (100). Nobody has actually run these through anyone's gut for this score.29
Cost per gram of carbohydrate
$0.081/g
Glucose : fructose · not disclosed
n/d
Comparison
6 of 22 gels heldPrices per single sachet at the cheapest box size we track. Best in green, worst in red, across the gels shown.
| Measure | 4Endurance 4Endurance 4Energy Gel | Maurten Maurten Gel 100 | Science in Sport SiS Beta Fuel Gel | Precision Fuel & Hydration Precision Fuel PF 30 Gel | NEVERSECOND NEVERSECOND C30 Gel | GU Energy Labs GU Original Energy Gel |
|---|---|---|---|---|---|---|
| CarbohydrateHow much fuel one sachet carries. | 20.6 g | 25 g | 40 g | 30 g | 30 g | 22 g |
| Glucose : fructoseGoverns how fast you absorb it. More fructose, higher ceiling. | n/d | 1 : 0.8 | 1 : 0.77 | 1 : 0.5 | 1 : 0.5 | ~ 1 : 0.47 |
| SodiumAgainst 400 to 1000 mg an hour typically lost in sweat. | 66 mg | 20 mg | 30 mg | not declared | 200 mg | 60 mg |
| ProvenanceWhether that ratio is read off the panel, computed from it, or inferred. | Not disclosed | Stated | Derived | Stated | Stated | Estimated |
| Price per sachetWhat one costs. Not comparable across sachet sizes. | $1.67 | $3.75 | $2.50 | $3.12 | $3.50 | $2.00 |
| Cost per gramThe only price that compares across sachet sizes. | $0.081 | $0.150 | $0.063 | $0.104 | $0.117 | $0.091 |
| Sachets for 90 g/hrHow many you open an hour to hold a 90 g/hr target. | 4.4 | 3.6 | 2.3 | 3.0 | 3.0 | 4.1 |
Verdict
what it does · what it costsWhat it does well
- 66 g sachet, more fluid volume than any other gel here, which some find easier to take down.
- Only 2.8 g of sugars out of 20.6 g carbohydrate.
- $0.081 a gram, on the cheaper end of the field.
What it costs you
- No glucose-to-fructose ratio stated.
- Low carbohydrate density for its sachet size means carrying more weight and volume per gram of fuel than a concentrated gel.
- Not sold through US retailers; pricing here is converted from EUR and availability will vary.
Where to buy
Prices and links as last checked.
Not yet checked at retail.
Who this is for
the numbers, appliedThe field tells you what it is. This is who should act on it.
Worth the money if
- You prefer a larger, more dilute gel over a concentrated one.
- You're comparison-shopping and value is a priority.
Look elsewhere if
- You want a concentrated gel to minimize what you carry.
- You need guaranteed US retail availability.