Best Marathon Running Shoes Compared: Nike Alphafly Next% 2 vs Vaporfly Next% vs Saucony Endorphin Speed 3

Introduction

Every marathon season brings the same debate: which shoe deserves a spot at the start line? Right now, three names dominate the conversation. The Nike Alphafly Next% 2, the Nike Vaporfly Next%, and the Saucony Endorphin Speed 3 each take a different approach to the same job, and picking between them comes down to how far you race, how fast you run, and how much cushioning you actually want underfoot.

There is also an old idea worth remembering here, credited to legendary shoe designer Bill Bowerman: remove an ounce (about 28 grams) from a running shoe, and a runner lifts around 200 pounds less per mile. Over a marathon, that adds up in a serious way. Yet, as we will see, the heaviest shoe in this comparison may still be the smartest pick for most runners.

Nike Alphafly Next% 2: Cushioning First

The Alphafly Next% 2 is built around extra cushioning and a larger heel and outsole surface area, which gives it a comfortable, controlled ride for the full marathon distance. Compared with the original Alphafly, the tweaks here make it feel more approachable for the general public, where the first version felt more like a shoe for a small group of elite athletes.

That extra cushion comes with a trade-off in weight. In hand it is noticeably heavier than the Vaporfly, around 55 grams more in comparable sizing. The question is whether the extra energy return from the air cushioning pods and additional ZoomX foam offsets that weight. For longer races, the answer for many runners is yes.

Here is the honest argument for the Alphafly: in the latter parts of a long run or marathon, when energy drains and form starts to drift, the extra cushion and more forgiving rearfoot landing area keep throwing you forward a little bit more. It may even save you time and energy late in a race. It is not an out-and-out speed session shoe, and it can feel like overkill at shorter distances, but as a marathon pick it is hard to beat for a broad range of runners.

Nike Vaporfly Next%: The Race Day Specialist

The Vaporfly Next% strips away everything that is not essential for racing fast. It uses the bare minimum of materials you need for the distance, nothing more and nothing less. Around 225 grams in a UK size 11, roughly 8 ounces, it is close to two ounces lighter than the Alphafly. Using Bowerman’s math, that is a meaningful amount of weight you stop lifting over every mile.

That is why faster athletes keep reaching for it. Plenty of elite-level runners continue to choose the Vaporfly Next% over the Alphafly because they simply do not need all that extra cushioning, and for them the weight saving is the bigger prize. If you can hold your form together over a race distance and you want a shoe that goes really fast, this is very much the Porsche in the line-up.

It is also worth being clear about where it shines. Over a half marathon, a well-trained runner can find the Alphafly’s extra cushion to be complete overkill, feeling like padding they never use. For shorter races where form does not fall apart, the Vaporfly is the one to reach for.

Saucony Endorphin Speed 3: Softer and Roomier

The Saucony Endorphin Speed 3 brings a different character to the table. The foam feels noticeably softer than the previous versions, and there is more of it, which gives the shoe a plusher, more forgiving feel day to day. The heel has also been made a little wider, adding a touch more stability that many runners will appreciate.

That combination makes it an appealing option for training runs and everyday miles where you still want some pop. If you want one shoe that can handle both workouts and easier runs without the aggressive race-day specificity of the Nike super shoes, this is a very sensible middle path.

Which Shoe Should You Buy?

For most runners, the decision comes down to distance and pace. If your goal is a full marathon, the Alphafly Next% 2 is the shoe many would reach for without hesitation: the extra cushioning and stability help when form starts to slip in the final miles. If you are racing shorter distances, chasing personal bests, or you are a faster athlete who does not want or need the extra stack, the Vaporfly Next% remains the classic answer.

The Endorphin Speed 3 sits apart as the more versatile pick, better suited to runners who want softer cushioning and a wider heel for a mix of training and racing rather than pure race-day performance.

Conclusion

There is no single greatest running shoe for everyone, and that is exactly the point. The Vaporfly Next% is the sharpest tool for fast runners and shorter races, the Alphafly Next% 2 is arguably the best marathon shoe for the broadest range of runners, and the Saucony Endorphin Speed 3 offers a softer, more forgiving ride for everything in between. Match the shoe to the distance you actually race, and the choice becomes a lot easier.