
| Spec | Rocket X 3 | Endorphin Pro 4 |
|---|---|---|
| Best price now | £110.00 | £95.45 |
| 90-day low | £110.00 | £95.45 |
| 30-day average | £188.21 | £136.98 |
| RRP | £220.00 | £230.00 |
| Category | Race | Race |
| Surface | Road | Road |
| Weight | 210g | 212g |
| Drop | 7mm | 8mm |
| Heel stack | 40mm | 39.5mm |
| Forefoot stack | 33mm | 31.5mm |
| Carbon plated | Yes | Yes |
| Stability | No | No |
| Review rating | — | — |
The Rocket X 3 is Hoka's do-it-all carbon racing shoe, the leaner, cheaper stablemate to the maximal Cielo X1. Where the Cielo goes big on stack and cushioning, the Rocket X 3 keeps things sharp: a PEBA midsole, a full carbon plate and a 40mm heel that stays legal for racing. At 210g it is not the lightest super shoe on the shelf, but it is versatile in a way the pure marathon rockets are not. This is a race shoe you can genuinely run across distances, from a 5K where you want turnover to a marathon where you want protection late on. We rate it as the sensible carbon racer for runners who want one fast shoe to cover everything rather than a shelf of specialists. At an RRP of 239 pounds it is priced with the elite pack, so you are paying for that flexibility.
The Endorphin Pro 4 is Saucony's carbon marathon racer, a road racing shoe built to help you chase a personal best over the half and full. It sits just below the top-tier Endorphin Elite in the range: less aggressive, a touch more forgiving, and easier to run at real-world marathon pace. At 212g it is light for a carbon racing shoe, and the full-length plate gives you that firm, rolling snap through toe-off that defines this category. The 8mm drop keeps you rolling forward rather than sitting back on your heels. In our view it is one of the more approachable super shoes: quick when you push, but not so unstable that it punishes you late in a race. For runners who want a genuine carbon marathon shoe without the harshest edge of an out-and-out elite racer, the Pro 4 is an easy shoe to recommend. Just know you are paying a premium race-day price at £230 RRP.
A side-by-side comparison makes the trade-offs between two running shoes easy to see, but the right pick still depends on how you run. Weight and stack height shape the feel underfoot: a lighter shoe with a lower stack feels nimble and fast, while a heavier, taller stack gives a softer, more protective ride for long miles. Heel-to-toe drop changes where you feel the load, with lower drops asking more of the calves and Achilles.
The price figures update from the UK retailers we track daily. The best price now is the cheapest tracked price we can currently link to, the 90-day low shows how cheap the shoe has been recently, and the 30-day average tells you whether a price is a genuine drop or just the going rate. Coverage is partial rather than complete, so always confirm the final price and your size on the retailer site, and set a price alert on the model you want so we can email you the moment it drops.
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