

The Zoom Fly 6 is the 6th iteration of the Zoom Fly series. It’s a training shoe with a stiff carbon plate in its midsole designed to give you a similar feel to the Vaporfly but in a more durable package. It costs $170.
The Vaporfly 3 is the race day rocket which has set many marathon and half marathon records. It’s one of the lightest, most propulsive racing shoes that money can buy but it has an expensive price tag of $260.
Which one of these Nike carbon fibre shoes is the right one for you?
The midsole of the Zoom Fly is made of SR02 foam which is dense and firm. It also has a top layer of ZoomX foam which is light and bouncy. It has a full-length articulated carbon plate embedded in it which gives it a forward tipping sensation.
The midsole of the Vaporfly is made of ZoomX which is super light, very cushioned and very bouncy. It also has a full-length carbon plate in it which makes it so propulsive.
The carbon plate inside the Vaporfly has a higher level of propulsion than the Zoom Fly because of its softer full ZoomX midsole. The ZoomX foam allows the plate to bend downwards more during heel strikes so that when it is released, it launches you forward like a spring-board would. In the Zoom Fly, the spring-board sensation is minimised because the midsole doesn’t have as much compression.
The midsole foam of the Zoom Fly is much more durable than the ZoomX midsole of the Vaporfly. ZoomX is a very brittle foam which is prone to scrapes, dents and it loses its cushioning over time faster than SR-02 foam.
The Zoom Fly is more suited to daily training because of its higher durability whereas the Vaporfly is better for races or key workouts due to its high price and lower durability.
Stability is better in the Zoom Fly than in the Vaporfly because the Zoom Fly has a thinner midsole so your foot sits lower to the ground. The Zoom Fly’s midsole is also firmer than the Vaporfly’s midsole so there is less lean bias and you don’t have to slow down as much when going around tight corners.
Both shoes have very similar outsoles with thick, hard rubber covering their entire forefoots. The Vaporfly has two long vertical strips on the heel whereas the heel of the Zoom Fly is fully covered with rubber. They both have exposed midsole foam on their midfoots but the main difference is that the exposed foam on the Zoom Fly holds up better over time than the exposed ZoomX of the Vaporfly because it is firmer and more scuff resistant.
The Zoom Fly has a mesh upper that feels similar to a daily trainer. The upper of the Zoom Fly has superb foot lockdown and is also very comfortable. It has extra padding on the inside of its collar so heel lockdown is fantastic and there is no heel slippage. The Zoom Fly fits true to size but is not available in additional widths.
The upper of the Vaporfly is made of engineered mesh which is even more breathable than mesh on the Zoom Fly. It also doesn’t absorb much liquid. The Vaporfly has a lightly padded tongue which is not gusseted so it slides downwards during runs. There is padding on the inside of the collar and lockdown is as good as the Zoom Fly. The fit is true to size and only available in a standard width.
If you’re a runner looking for a durable training shoe which is more affordable, the Zoom Fly is the better option for you. It has a foam midsole which is tougher than the Vaporfly’s midsole and it has an upper which is more comfortable. The Zoom Fly is more stable than the Vaporfly and $90 cheaper which is a significant amount.
If you’re looking for a racing shoe for race days or key workouts, the Vaporfly is the shoe for you. It has a bouncy, cushioned ZoomX midsole and a high level of propulsion from its carbon plate. The Vaporfly is much lighter than the Zoom Fly and it has a more breathable upper. It’s designed to break records and personal bests.