Nike Streakfly 2 Review: A Niche Powerhouse for Speed Workouts
- FORDY RUNS
- Oct 6
- 3 min read
The Nike Streakfly 2 is one of the most lightweight and aggressive road racing shoes on the market—but it's definitely not for everyone. After months of trial and error, its true potential finally became clear: this shoe is a secret weapon for speed workouts, not necessarily a go-to for racing or everyday training.
Impressions & Build
Weighing in at just 139g (UK size 9.5), the Streakfly 2 is featherlight—significantly lighter than even the Vaporfly 4 at 189g. Nike has packed in a full-length ZoomX midsole, a carbon-infused Flyplate, and an ultra-minimalist upper. It's clearly built for speed and nothing else. Comfort is minimal, and the forward-biased design almost demands perfect form and forefoot striking.
This shoe is built on the concept of aggressive propulsion. Modeled after Nike’s Dragonfly spike, the geometry of the midsole makes it clear: if you’re not landing on your forefoot, it’s not for you. Heel strikers or runners with collapsing form during fatigue should steer clear.
Fit & Functionality
The Streakfly 2 fits true to size (UK 9.5 tested), with a decent lockdown from a redesigned lacing system. It features a 4mm drop and a 27mm stack height—slightly lower than the previous version. The outsole has minimal rubber coverage, especially at the heel, reinforcing that this shoe isn’t meant for slow paces or tired legs.
Where It Doesn’t Work
For many runners, this shoe may not find a natural place. It’s too aggressive and minimal for longer distances like 10K and above. Even at parkrun pace or as a 5K racer, it may feel uncomfortable if form deteriorates over time. It’s not a forgiving ride and doesn’t accommodate any mistakes in mechanics. If your stride breaks down under fatigue, the Streakfly 2 won’t cut you any slack.
Where It Shines
After some experimentation, the Streakfly 2 proved its worth during structured speed workouts—short intervals, hill repeats, and track sessions. It provided the perfect combination of propulsion and responsiveness needed to hit target paces and recover quickly between reps.
For those training for major events and looking to sharpen their edge with fast, focused sessions, the Streakfly 2 can be an incredible tool. It feels electric underfoot during those all-out efforts, almost like it’s urging you to go faster.
Value & Alternatives
At £165 RRP, it’s a steep investment for a workout-only shoe—especially when other models like the Adidas Takumi Sen, Nike ZoomX Streakfly 1, or even clearance carbon racers can offer comparable performance at lower prices.
Unless you have room in your budget for a dedicated workout shoe, it may be better to opt for something more versatile like the Vaporfly 4, Zoom Fly 6, or a reliable super-trainer that can handle both sessions and races.
Verdict
The Nike Streakfly 2 is an exciting, razor-sharp tool for a very specific job: crushing speed workouts. It’s not a race-day all-rounder, and it’s certainly not for beginners or runners with inconsistent form. But if you’re dialed in, running fast, and want to feel explosive in every rep, this shoe delivers—just know what you’re signing up for.
Pros:
Incredibly lightweight and responsive
Great for intervals, hills, and track work
Excellent ground feel for faster runners
Cons:
Too aggressive for longer efforts or everyday use
Not suitable for heel strikers or runners with fading form
High price point for a niche-use shoe
