What a Carb Drink Mix Actually Costs: Grams, Not Pouches
Guest writer: Gabriel Villarreal
Hydrax Nutrition
hydrax.com.au
Most runners compare pouch prices. That is the wrong number.
One brand calls 30g of carbohydrate a serve. Another calls 85g a serve. Same word on the front of the pack, completely different bottle. What you are actually buying is grams of carbohydrate, plus enough sodium to go with them.
Here is the maths, done on our own shelf prices, checked 11 September 2026.
The only formula you need
Pack price divided by the total grams of carbohydrate in the pack. That gives you cost per gram. Multiply by your hourly carb target, then by the hours you actually fuel each week.
Working out total grams is the step people skip, and it is where the marketing hides. A pouch that makes 12 serves at 85g of carbohydrate holds 1,020g. A bag that makes 7.5 litres at 60g per litre holds 450g. Both sit on our shelf at about fifty dollars.
Before you worry about powder cost, get the session itself right. The free running pace calculator will tell you how long you will actually be out there, which is the number you multiply everything else by.
What these mixes cost per gram
| Mix | Format | Price | Total carb in pack | Cost per gram |
|---|---|---|---|---|
| HYDRAX CORE | 1.08kg pouch, 12 serves | $49.00 | 1,020g | 4.8c |
| Tailwind Endurance Fuel | Large bag, 50 serves | $94.00 | 1,250g | 7.5c |
| Tailwind High Carb Fuel | Single serve stick | $8.50 | 90g | 9.4c |
| Tailwind Endurance Fuel | Medium bag, 30 serves | $72.00 | 750g | 9.6c |
| Precision Fuel Carb & Electrolyte | Bag, makes 7.5L | $49.99 | 450g | 11.1c |
| Tailwind Endurance Fuel | Single stick, 2 serves | $6.00 | 50g | 12.0c |
Look at Tailwind Endurance three times in that table. Same product, same flavour, 7.5c a gram in the large bag and 12.0c in the single stick. That is a 60% difference driven purely by pack size. Before you switch brands to save money, check whether you are just buying the wrong size of the brand you already like.
Cost per hour of running
Multiply cost per gram by your hourly target.
| Mix | At 60g per hour | At 90g per hour |
|---|---|---|
| HYDRAX CORE pouch | $2.88 | $4.32 |
| Tailwind Endurance, large bag | $4.51 | $6.77 |
| Tailwind High Carb stick | $5.67 | $8.50 |
| Tailwind Endurance, medium bag | $5.76 | $8.64 |
| Precision Fuel Carb & Electrolyte | $6.67 | $10.00 |
| Tailwind Endurance, single stick | $7.20 | $10.80 |
Put that against a real block. Twelve weeks of marathon training with three fuelled hours a week at 60g an hour is 36 hours of fuelling. That is roughly $104 on the CORE pouch, $162 on the large Tailwind Endurance bag, and $240 on the Precision Fuel bag. None of those is a wrong answer. But it is worth knowing before you commit to a mix for a whole build, and the shelf price on day one does not tell you.
Sodium belongs in the same comparison
Cheap carbohydrate with no salt is not a bargain in a Queensland summer. Read milligrams of sodium next to grams of carbohydrate, scaled to the same hour.
| Mix | Sodium at 60g carb | Sodium at 90g carb |
|---|---|---|
| Precision Fuel Carb & Electrolyte | 1,000mg | 1,500mg |
| HYDRAX CORE | ~695mg | ~1,043mg |
| Tailwind High Carb Fuel | ~453mg | 680mg |
Precision Fuel is clearly the strongest of these on sodium per gram of carbohydrate, which is exactly why plenty of heavy and salty sweaters stay on it despite the cost per gram. Cheapest and best fit for your sweat are two different questions. Work out roughly what you lose with a sweat rate calculator before you decide which column matters more to you.
Dual source carbohydrate, briefly
Glucose type carbohydrates share one main gut transporter that saturates for many athletes somewhere near 60g an hour. Fructose uses a second pathway. That is why mixes aimed at higher intakes use a roughly 2:1 blend. It lets you take on more without the bloat. It does not skip the weeks of gut training you need to get there.
If you are sitting at 60g an hour and comfortable, dual source is a nice to have. If you are building toward 90, it matters.
Reading a label in thirty seconds
- Find grams of carbohydrate per serve, not calories.
- Find how many serves are in the pack, or how many litres it makes.
- Multiply. That is your total grams.
- Divide the price by it. That is your cost per gram.
- Check milligrams of sodium at the same carb number.
- Check whether it is dual source if you are chasing 80g an hour or more.
If you want to sketch the whole week rather than a single bottle, the fuelling strategy tool is a decent free starting point.
FAQ
Is the cheapest mix per gram the right one for me?
Not automatically. It is the right starting point for budget, then sodium, gut tolerance and flavour fatigue decide it. A mix you cannot stomach at hour three is expensive at any price.
Why do single serve sachets cost so much more?
Packaging and convenience. They are worth it on race day and for travel. They are an expensive way to fuel every long run for twelve weeks.
Does buying the bigger bag always save money?
On cost per gram, yes, and by a lot. The catch is flavour fatigue. A large bag you get sick of at week six is worse value than two medium bags you finish.
How many carbs per hour should I be aiming for?
Commonly 60g an hour for beginners and intermediates, building toward 90g an hour for advanced half and marathon work once the gut is trained.
Do prices change?
Yes. The method does not. Pack price divided by total carb grams, times your hourly target, times your weekly hours.
Come and check the labels with us
Bring your weekly hours and your gut history into the store on Manilla Street and we will do the per gram maths with the actual packs in your hands. It takes five minutes and usually saves people a few hundred dollars across a training block.
Educational only, not medical advice. Prices checked 11 September 2026 and subject to change. Confirm the label on the pack before you buy.
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