Every endurance athlete knows the trade-off: speed costs money. But how much speed you get for that money matters — so let's run the numbers on the two most talked-about performance options in running right now.
The $295 supershoe: fast, but pricey per second
Carbon-plated racing shoes like the Nike Alphafly 3 have reshaped marathon running. At $295, they save roughly 6 minutes 14 seconds off a four-hour marathon — a real, measurable gain that serious runners pay for gladly.
But do the per-second math: 374 seconds gained for $295 works out to about $0.79 per second. That's a premium price for every second off your time.
The $60 alternative: more time, far less money
The GO² Endurance device works a completely different angle: your breathing. In testing it increased endurance by 6% and VO₂ max by 4%, which translates to roughly 10 minutes off a marathon — more absolute time saved than the supershoe.
At $59.95 for 600 seconds of time savings, that's about $0.10 per second — roughly 7.9x cheaper per second than the carbon-plated option.
The mileage problem nobody talks about
Here's the part supershoe marketing skips: carbon-plate foam is a consumable. The responsive foam in top racing shoes dies after roughly 150 miles — which means about $590 of shoes to race two marathons. Then you buy again.
The GO² device has no expiration date. One $59.95 purchase keeps delivering race after race, season after season.
Why breathing beats foam
- GO² is the only breathing device scientifically proven to increase oxygen and endurance while lowering heart rate
- Patented technology — nothing else on the market works this way
- Designed by doctors, made in the USA, and WADA legal
- It stacks with everything else you wear — including the supershoes
The verdict
If you're chasing a personal best, the math is hard to ignore: ten minutes off your marathon at $0.10 per second, from a device that never wears out — versus six minutes at $0.79 per second, from shoes that die at 150 miles. The supershoe is a fine tool. GO² is simply the better value.
Get the GO² Endurance Device — $59.95 and stop paying a dollar a second for speed.