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Nike Streakfly 2(2025)

In production · road · Race day / Tempo · $170

Short-distance racer: featherweight, low and honest for 5K–10K.

Built for race day, tempo, at a target pace of 5:15–7:00 /mi on road.

The spec sheet

Weight
144 g / 5.1 oz
Heel stack
27 mm
Drop
4 mm
Midsole foam
ZoomX
Plate
Carbon
Cushioning
3 / 5
Energy return
4 / 5
Responsiveness
5 / 5
Rocker
3 / 5
Flexibility
2 / 5
Stability
2 / 5 (5 = most guidance)
Toe-box
Narrow
Sizing
Size up ½
Durability
~250 mi
Price
$170

How it rides

The foam

The midsole is ZoomX, tuned balanced (3/5 on our cushioning scale). Energy return is above average: the midsole rebounds well without feeling unstable. 27 mm of heel stack keeps you low and connected, with more ground feel than most current trainers. Combined, the ride reads as explosive at 5/5 responsiveness.

The plate

A full-length carbon plate stiffens the forefoot and works with the foam as a lever: it smooths the transition off the toes and cuts the effort of holding fast paces. It also asks for speed — at easy paces a carbon plate feels stiff and does little for you, and it is the main reason super-shoes wear out sooner than trainers.

The geometry

A low 4 mm drop encourages a midfoot landing and keeps the ankle working through a fuller range. The rocker is moderate — enough curve to smooth the roll-through without dictating your footstrike. The forefoot is stiff, so it rolls rather than bends — a lever, not a slipper. It is a neutral platform with no built-in correction.

Fit, sizing & life

The toe-box is narrow and performance-oriented; wide-footed runners should try before buying. It runs small; most runners size up a half. Expect roughly 250 miles from the outsole, about $0.68 per mile at $170.

For the foams and plates Nike uses across its line, read the Nike brand guide.

How it compares

Measured against the 542 currently-available shoes in the catalog. The bar shows where this shoe sits in that range.

Weight

144 g / 5.1 oz

131 g lighter than the catalog median of 275 g

Heel stack

27 mm

9 mm lower than the catalog median of 36 mm

Drop

4 mm

2 mm lower than the catalog median of 6 mm

Price

$170

10 pricier than the catalog median of 160

Responsiveness

5 / 5

Catalog median 3 / 5

Cushioning

3 / 5

Catalog median 4 / 5

Energy return

4 / 5

Catalog median 3 / 5

Durability

~250 mi

Catalog median ~400 mi

Within the Nike line it is lighter than the brand's median (295 g / 10.4 oz) and sits lower than its median stack (36 mm).

Closest alternatives

Current shoes with the nearest combination of weight, stack, drop, foam feel and plate.

Saucony Sinister

139 g / 4.9 oz · 25 mm · 6 mm drop · Carbon · $180

Short-course carbon racer for 5K to half-marathon speed.

New Balance FuelCell SuperComp Pacer v3

190 g / 6.7 oz · 32 mm · 6 mm drop · Carbon · $180

Short-course carbon racer for 5K to half marathon.

Adidas Adizero Takumi Sen 10(2024)

196 g / 6.9 oz · 33 mm · 6 mm drop · Carbon · $180

Firm, brutal 5K–10K racer. All snap, no lounging.

Adidas Adizero Adios Pro Evo 3

139 g / 4.9 oz · 39 mm · 3 mm drop · Carbon · $510

Adidas Adizero Adios Pro Evo 3: 39 mm heel stack, 3 mm drop, 99 g — specs from independent lab testing.

Topo Athletic Cyclone 3

205 g / 7.2 oz · 30 mm · 5 mm drop · — · $155

Light, energetic tempo shoe that wakes up at speed.

Lineage & siblings