| Spec | Rocket X 3 | Streakfly 2 |
|---|---|---|
| Best price now | £128.88 | £92.97 |
| 90-day low | £110.00 | £71.42 |
| 30-day average | £187.95 | £146.68 |
| RRP | £220.00 | £170.00 |
| Category | Race | Race |
| Surface | Road | Road |
| Weight | 210g | 165g |
| Drop | 7mm | 4mm |
| Heel stack | 40mm | 27mm |
| Forefoot stack | 33mm | 23mm |
| 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 Streakfly 2 is Nike's short-distance specialist: a featherweight carbon racing shoe built to fly over 5K and 10K, not to baby your legs through a marathon. At 165g it is one of the lightest plated road racers you can buy, and that shows the moment you lift the pace. This is the rare super-shoe that stays nimble and low to the ground, so it turns and accelerates like a racing flat while still giving you the carbon snap you expect from a modern running shoe. Compared with the Vaporfly 4, which is built for the full and half, the Streakfly trades stack and long-haul cushioning for speed, agility and a more connected feel for the road. We rate it highly for parkrun PBs, track 5Ks and sharp interval sessions. At 170 pounds RRP it is a focused tool, and we would buy it knowing exactly what it is for.
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.
Line up any two running shoes on price, specs and 90-day history.
Compare other shoes →