Hoka Rocket X2 vs Saucony Endorphin Elite: Two Fast Carbon Racers Compared

Introduction

Two of 2023’s most talked-about carbon racing shoes, the Hoka Rocket X2 and the Saucony Endorphin Elite, both represent big departures from what each brand has released before. They are similar in many ways: both are light, both feel fast, and both share a lot of the same design DNA. But on the run, they behave quite differently, and the differences matter more than the similarities.

This comparison looks at how they stack up on weight, construction, fit, ride feel, and value, so you can decide which one belongs on your race day feet.

Specs and Construction

The Endorphin Elite is the pricier of the two at £280 in the UK or $275 in the US, while the Rocket X2 comes in at £220 or $225. Both are light: the Endorphin Elite weighs 219g (7.7oz) and the Rocket X2 225g (7.9oz) in a UK size 9. The Rocket X2 is the lower drop shoe at 5mm, versus 8mm for the Endorphin Elite.

The Endorphin Elite uses a knit mesh upper with cutouts and overlays to keep weight down, minimal heel padding and structure, a new PWRRUN HG midsole foam, a carbon plate with a slotted front for flexibility, and a very aggressive Speedroll rocker. Rubber coverage is limited to the forefoot and a strip at the back, with a large midsole cutout revealing the plate. The Rocket X2 has a synthetic mesh upper, a two-density PEBA-based ProFlyX midsole with a softer top layer and firmer layer beneath, a scooped full-length carbon plate, and a similarly generous midsole cutout.

Fit and Sizing

Fit is where these two shoes diverge most sharply. Testers running in their normal UK size 8.5 found both true to size in length, but the experience around the foot is very different.

The Rocket X2 is very tight and hugging, bordering on too tight. It is hard to get on initially, and the toe box leaves almost no room to move your toes. Wide-footed runners in particular have found the internal cage and gusseted tongue restrictive. On the upside, that dialed-in race fit means zero foot movement, and it corners very well. Going up a quarter size is the sensible move if you can; half a size up may be too much.

The Endorphin Elite is roomier, with more flex and wiggle room, and its heel padding takes some positioning to settle into. Some runners have reported toe rubbing and discomfort around the arch and forefoot during races, so trying a half size up is worth considering if that sounds familiar.

Ride and Performance

The Endorphin Elite is one of the more aggressive and direct carbon shoes around. It is firm, propulsive, and pushes your foot into a position to tip onto the forefoot and go. It is a long way from the more natural-feeling Endorphin Pro 3. That aggression pays off when you are going all out: it has delivered half marathon PBs and near-PB 10Ks, and it maintains pace efficiently as fatigue sets in. But it is a harsh shoe underfoot, with noticeable forefoot discomfort reported over even a 10K at race effort. At easy paces it becomes comfortable again, but as a training shoe it offers little benefit and a lot of discomfort. It is a shoe to reserve for genuine race and PB attempts, and its resilient foam means there is essentially no risk of it bottoming out.

The Rocket X2 is softer, more versatile, and more likable. It does not feel as bouncy or propulsive as the Endorphin Elite, and some find it almost mushy at easy paces, but when you speed up the plate engages and it delivers a fast, efficient, punchy ride with a spring under the ball of the foot. It has handled track sessions, parkruns, and a 7.2K relay leg at race pace comfortably, with no forefoot discomfort. It also works at training paces better than the Elite, though it is not a great dedicated trainer. The main concern is that the softer foam may compress and bottom out over longer, harder efforts such as a full marathon.

Grip, Stability, and Durability

Grip is a genuine strength for both shoes. Testers have run very wet track sessions in both, including fast reps on a nearly flooded track, with no issues. Both are also at the more stable end of the super shoe spectrum, with the Rocket X2 feeling slightly more grounded and supportive thanks to its low drop.

The Rocket X2 also runs a little smoother through the transition, with a more pronounced toe spring and rocker that makes it feel fluid and fun. The Endorphin Elite holds your foot a little less securely, with more foot movement on the platform in tight corners.

Which Should You Buy?

For most runners, the Rocket X2 is the easier recommendation. It is cheaper, more comfortable, more versatile, and more accessible, and it protects the body nicely over racing distances. For anything up to a half marathon it is the clear pick. Its softness over a full marathon remains the one open question.

The Endorphin Elite makes sense if you want the most aggressive, forward-tipping ride possible for a PB attempt and can tolerate the firmer feel and less generous fit. Its roomier upper may also suit wider-footed runners over longer distances where the Rocket X2’s tightness could become a problem. But at £280 or $275, it is hard to argue you are getting meaningfully more performance than the Rocket X2 provides at its lower price.

If neither feels right, it is worth noting that older carbon shoes at discounted prices, such as the Vaporfly, remain great value picks.

Conclusion

Both of these are genuinely fast racing shoes, and you will get a good shoe either way. The Endorphin Elite is firmer, more aggressive, and guarantees no bottoming out, but it is harsh, less comfortable, and expensive. The Rocket X2 is softer, punchier, more fun to run in, and significantly better value, with only a slight question mark over its foam on very long hard efforts. Unless you specifically need the Elite’s roomier fit or its maximal aggression for a PB push, the Rocket X2 is the smarter buy.