During-effort fuel · gel · reviewed 28 Aug 2026

4Endurance 4Energy Gel 35

Item: 4Endurance 4Energy Gel
Rating: 35
Author: Lourenço Faria e Maia

4Endurance / 66 g sachet / 20.6 g carbohydrate / $1.67

One of the bigger sachets here at 66 g, but among the lowest calorie and carbohydrate density per gram of sachet weight: more volume for less fuel, at 8.1 cents a gram of carbohydrate.

Score breakdown

Each dimension below is scored 0 to 100 against a fixed scale, not against the rest of the catalog, so adding a product never moves this number. The overall score is the average of the dimensions this product declares data for. How the scales are set →

35/100

Mixed

Based on 3 of 4 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

Value (cost/gram) ?Price of one gram of carbohydrate. Not physiological: a market-based scale from 15 cents/g (0) to 2 cents/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

8.1 cents/g

Glucose : fructose · not disclosed

n/d

Comparison

5 of 38 gels held

Prices 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
Overall scoreAn average of the various variables measured.	35	47	58	49	42
CarbohydrateHow much fuel one sachet carries.	20.6 g	25 g	40 g	30 g	30 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
SodiumAgainst 400 to 1000 mg an hour typically lost in sweat.	66 mg	20 mg	30 mg	not declared	200 mg
ProvenanceWhether that ratio is read off the panel, computed from it, or inferred.	Not disclosed	Stated	Derived	Stated	Stated
Price per sachetWhat one costs. Not comparable across sachet sizes.	$1.67	$3.75	$2.50	$3.12	$3.50
Cost per gramThe only price that compares across sachet sizes.	8.1 cents	15 cents	6.3 cents	10.4 cents	11.7 cents
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

Verdict

what it does · what it costs

What it does well

66 g sachet, more fluid volume than most gels here, which some find easier to take down.
Only 2.8 g of sugars out of 20.6 g carbohydrate.
8.1 cents 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. The price next to the name above is per unit at the cheapest box size we track; a single-unit price below may run higher.

Not yet checked at retail.

Who this is for

the numbers, applied

The 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.