DIY Endurance Fuel Probably Isn't Actually Cheaper

There is a whole subculture of endurance athletes who swear by making their own fuel. Maple syrup in soft flasks, rice syrup blends, homemade gels, potato purées. And if you genuinely love experimenting in the kitchen, I get it. I love to knit, even though every hat I make comes out lumpy, weird, and costs more than anything I could buy at Anthropologie. Sometimes the joy is in the making, not the outcome. If that is you: rock on.

But I do not buy the argument that DIY gels are automatically cheaper. And I think that belief sometimes comes less from an actual dollars-and-cents calculation and more from a diet culture place: this impulse to make your fueling feel "cleaner," "purer," or more "natural." Which is worth examining.

So here is how I actually think about it.

The Real Cost of a Homemade Gel

Take a NeverSecond gel, one of my go-tos. Retail price is around $3.50. Each one delivers 30 grams of carbohydrates, carefully balanced glucose and fructose, in a texture and packaging engineered for fast absorption and minimal GI distress.

DIY ingredient cost runs roughly $1.00 to $1.50 per gel equivalent depending on bulk purchasing. That looks cheaper at first glance.

Then there is the line item nobody accounts for: time. Let's say it takes 30 minutes to weigh, mix, portion, clean, and package enough fuel for a long run. If you value your time at $35 an hour, which is less than you would make at the Wendy's near my house, that is $17.50 of labor cost. Spread across 10 homemade gels, you are right back at $3.25 each. Basically identical to store-bought.

And in other areas of my life, my time is valued higher. Podcast production runs $100 or more per hour. From that lens, spending 30 minutes stirring powders into a sticky paste is not just messy. It is a genuinely questionable use of resources.

If making gels brings you joy, that calculus changes completely. I spend money knitting lumpy scarves that a machine could produce better and cheaper, and I have no regrets. I also spent multiple hours this month watching not one but two separate Amanda Knox documentaries, so my relationship with time optimization is clearly not without flaws. The difference is that I actually enjoy those things. I do not enjoy making gels. They do not perform as well for me as the pre-made versions. So for me, the "DIY is cheaper" argument requires assumptions that do not hold.

It only makes sense if you value the making itself. If you want to, not if you feel like you should.

Homemade Gels Rarely Match Commercial Performance

Even if the math works out in your favor, homemade gels face real performance limitations that are easy to underestimate.

Sports nutrition companies are not just throwing sugar into a packet. They spend years on formulation problems that are surprisingly hard to solve in a home kitchen.

Carbohydrate ratios are more consequential than they seem. Getting the right mix of glucose and fructose to maximize absorption and minimize GI distress requires hitting specific transporter saturation thresholds. A little off in either direction and you risk bloating, cramping, or simply not getting enough carbohydrate into circulation when you need it.

Osmolality, how concentrated the solution is, matters for gastric emptying. Too concentrated and the gel sits in your stomach pulling water in, causing sloshing and urgent bathroom stops. Too dilute and you lose the carbohydrate density you are trying to achieve. Manufacturers run lab tests to dial this in. Most DIY versions are educated guesses.

Electrolyte balance is easy to get wrong in both directions. Many commercial gels include calibrated amounts of sodium and potassium to support absorption and offset sweat losses. Homemade versions frequently skip this or overcorrect.

Texture and viscosity are real factors at mile 22 when you are already breathing hard. DIY mixes often come out gritty, too thick, or inconsistent batch to batch. Fine at your kitchen counter. Less fine when you are trying to get calories in fast during a race.

Packaging matters in ways that become obvious at speed. Store-bought gels are designed not to leak, burst, or require two hands to open. Homemade solutions usually involve refillable flasks or improvised containers that work fine in training and become a problem in a race.

None of this is impossible to solve at home. But it is not trivial either. If your DIY fuel is working for you, keep going. If it is not, there is no shame in letting the people with food science degrees handle the formulation.

The Comparison Point Is Usually Wrong

A lot of the "gels are expensive" conversation persists because people are using the wrong baseline. Mentally, many athletes compare the cost of fueling properly (60 to 90 grams of carbohydrate per hour) against not fueling at all. Against that baseline, of course gels look expensive. $3.50 compared to zero dollars.

That is a false comparison. The real comparison is store-bought versus DIY, or fueled versus fueled. Not fueled versus skipping fuel entirely.

Going without fuel during hard or long training is not a neutral choice. It carries real costs: diminished training adaptations, higher injury risk, worse recovery, and the specific kind of GI chaos that comes from bonking and then trying to eat too much too fast. The sticker shock on sports nutrition looks very different once the actual alternative is priced in.

When DIY Is Really About Purity, Not Price

Here is the part that does not get said directly enough. Sometimes the push to make your own gels is not really about money. It is about control. The feeling that sports nutrition out of a packet is artificial or somehow worse than maple syrup in a flask, and that making your own fuel is a morally superior choice.

That is diet culture moving in through the back door. And while there is nothing wrong with wanting to understand what is in your fuel, there is a problem when the impulse is rooted in fear or shame rather than genuine preference.

A gel is not a moral failing. Maltodextrin is not a character flaw. The glucose-fructose blend in a commercial packet is doing the same metabolic job as the dates you mashed up at home, often more efficiently and with better GI outcomes.

A few questions worth sitting with if you are drawn to DIY fuel:

Are you doing this because it genuinely brings you joy, the way cooking or fermenting or any hands-on process does?

Or are you doing it because you do not fully trust yourself to consume something that comes in a foil packet?

Are you comparing the cost of gels to DIY gels, or to not eating anything during training?

Do you feel better about your fueling when the ingredients are recognizable, even if the performance is worse?

There is no wrong answer. But the "why" behind fueling decisions matters, because it tends to reveal whether the goal is performance or something else.

The Bottom Line on DIY Endurance Fuel

If making your own fuel brings you genuine joy, do it. The process has real value independent of the economics. But if the motivation is purely cost savings, the numbers frequently do not support it once time is factored in honestly.

And if the motivation is purity, it is worth naming that directly and asking whether it is actually serving your training or complicating your relationship with food.

For most athletes, buying a well-formulated commercial gel is not more expensive than DIY when the full cost is calculated. It is almost certainly less expensive than the blown races, extra recovery days, and emergency shorts purchases that come from getting the fructose ratio wrong.

Fuel is a performance tool. It does not need to be homemade to count.

We get into the diet culture dynamics around fueling regularly on Your Diet Sucks, including how "clean eating" logic sneaks into athletic contexts where it has no business being. If you want to go deeper on any of this with people who are also trying to sort out what is evidence-based versus what is just diet culture in compression socks, the Patreon is where those conversations happen.