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Nike Vaporfly v4 vs ASICS Metaspeed Sky Tokyo

A side-by-side comparison grounded in verdicts from 5 reviewers with every source linked. We don't invent quotes; every claim below is attributed.

Specs at a glance

Nike Vaporfly v4 ASICS Metaspeed Sky Tokyo
Stack (heel / forefoot) 36.0 / 30.0 mm 40.0 / 35.0 mm
Drop 6.0 mm 5.0 mm
Weight (men's 9) 5.9 oz (167g) 5.6 oz (159g)
Midsole ZoomX (PEBA) FF TURBO PLUS (PEBA) + FF LEAP (PEBA)
Plate Full-length carbon fiber Flyplate (curved) Flat carbon fiber plate (higher midsole placement)
Upper Racing engineered mesh MOTION WRAP 3.0
MSRP $240.00 $270.00

The consensus read

Each paragraph is a synthesis across every reviewer in our database for that shoe — what they collectively concluded after wear-testing. Not a quote. Not one person's take. The shape of the room.

Nike Vaporfly v4

A radically lighter, snappier return to the original Vaporfly's aggressive racing DNA, best suited for 5K through half marathon but no longer a reliable marathon pick; reviewers praise the direct ride and ground feel but flag a narrow platform and reduced cushion for longer distances.

ASICS Metaspeed Sky Tokyo

A bouncy, lightweight carbon racer that excels from 5K to marathon, praised for its trampoline-like heel and responsive forefoot pop, though some testers flag reduced stability and note the soft foam may feel too cushy for heel strikers or those preferring firmer platforms.

Reviewers who wore both

Direct paired observations — reviewers who actually ran in both of these and wrote the contrast. This is the strongest comparative signal on the page.

Vaporfly 4 is lighter and quicker but less bouncy and less versatile

— The Run Testers on the Nike Vaporfly v4, source

Beast of traction compared to Vaporfly 4

— EDDBUD on the Nike Vaporfly v4, source

Metaspeed Sky Tokyo feels just as light but with more bounce — preferred over the Vaporfly 4

— The Run Testers on the Nike Vaporfly v4, source

Metaspeed Tokyo is far better with lightness, speed, bounce, and propulsion

— The Run Testers on the Nike Vaporfly v4, source

Sky is comparable to or lighter than the Vaporfly, one of the lightest race-day shoes

— Believe in the Run on the ASICS Metaspeed Sky Tokyo, source

Nike went the opposite direction, reducing midsole stack.

— EDDBUD on the ASICS Metaspeed Sky Tokyo, source

More bounce, more energy return, and more versatility across distances

— The Run Testers on the ASICS Metaspeed Sky Tokyo, source

Nike Vaporfly v4 — what reviewers say

Ride profile: high cushion , neutral stability .

  • #4 carbon racer. Brings Vaporfly closer to Alphafly aesthetic — execution issues but still fun at fast paces. Extremely lightweight.

    In their words: "still very fun for running very fast" · "extremely lightweight shoe" · "execution issues going on with this shoe"

    — Kofuzi , source

  • Didn't make top 5. Lower stack, not as cushioned, narrow. More a 10K/half shoe than a marathon racer. More a competitor to the Takumi Sen 11 than to top-tier carbons.

    In their words: "not in the same league" · "still very narrow" · "Quite a costly shoe"

    — EDDBUD , source

  • A solid but limited race shoe that feels light and quick at shorter distances but lacks the midsole and bounce for longer races, especially the marathon.

    Ride:Lighter and closer to the ground than Vaporfly 3 with snappy, responsive ride and reliable landings; lacks midsole bounce and feels limited at longer distances; works well for shorter, faster efforts.

    Fit:Roomier than expected for such a lean, small-looking shoe with plenty of space for the big toe; race-hugging without feeling cramped, with some heel slipping fixable with attentive lacing; stay true to size.

    In their words: "designed for shorter distances" · "doesn't have enough midsole for me" · "a half marathon sweet spot"

    — The Run Testers , 50 mi tested , source

  • Not a flop — still a top-tier super shoe, but Nike has narrowed its purpose to 5K and 10K racing, making it less versatile than prior Vaporflies and a poor pick for half marathon or marathon distances.

    Ride:Lightest Vaporfly yet, makes 5K pace feel smooth and efficient; ZoomX shows quick compression where the foot lands

    Fit:Best-fitting Vaporfly to date with a slightly more narrow forefoot, traditional tongue and a secure spike-like lockdown; no heel slipping for Ben

    — Ben Is Running , 62 mi tested , source

ASICS Metaspeed Sky Tokyo — what reviewers say

Ride profile: maximal cushion , neutral stability .

  • Both reviewers consider the Metaspeed Sky Tokyo one of the top two to three carbon plate racing shoes currently available, praising the improved FF Leap foam for delivering a lighter, bouncier, and more responsive ride than the already-excellent Sky Paris predecessor. Minor downsides include reduced stability compared to the Paris and typical ASICS outsole durability concerns.

    Ride:Dual-layer FF Leap and FF Turbo Plus midsole provides a soft, bouncy, and highly responsive ride with excellent energy return. Lighter and bouncier than the Metaspeed Sky Paris predecessor. Plate engagement is easy and provides strong propulsion off the toes. Not the most stable shoe due to the soft foam wedge at the heel, but not a major concern for most runners.

    Fit:True to size for both reviewers. Good room around the toes and forefoot, slightly more snug than ASICS training shoes like the Nimbus. Comfortable lightweight Motion Wrap upper with good heel and midfoot lockdown. Midfoot has a bit more give than typical race shoes.

    In their words: "great compact race shoe" · "really fast, really fun" · "not a particularly stable shoe"

    — The Run Testers , 87 mi tested , source

  • Kofuzi considers the Metaspeed Sky Tokyo an excellent marathon racer that combines cushion and speed effectively, holding up well through 100 miles with consistent ride quality and plenty of life remaining.

    Ride:Two-foam setup (FF Turbo Plus on top, aliphatic TPU on bottom) delivers excellent impact absorption with strong snapback. Good balance of softness and bounciness that has remained consistent through 100 miles. Feels light and fast without sacrificing cushion.

    Fit:Upper feels comfortable for long durations while maintaining a snug, locked-in feel. Most comfortable racing upper from ASICS yet. Slight curling of heel collar edge material but no functional wear.

    In their words: "lightweight and fast yet cushioned racing shoe" · "great combination of cushion and speed" · "balance of softness and bounciness"

    — Kofuzi , 100 mi tested , source

  • An ultralight, wildly bouncy racer best suited to lighter runners with good form retention; the reviewer personally would pick it over the Pro 5 given his light build and the shoe's dramatic weight savings.

    Ride:Wild, exciting trampoline-like bounce from compressive, squashy Flight Foam Leap under a flatter plate; bounce engages more with harder foot strikes. Ride is unpredictable and not all that consistent across the foot.

    Fit:Very minimal upper with thin materials, especially on the tongue; no sidewalls and no overlays in the toe box. Narrow shoe, especially in the heel. Serrated laces come as stock and are needed to dial in lockdown. No heel slip.

    In their words: "wild and exciting bounce" · "It's almost like a trampoline" · "much narrower shoe from AS6"

    — EDDBUD , source

  • The faster of the two Metaspeed shoes for the reviewer — a genuinely racy, responsive shoe best suited to shorter race distances from 5K up to half marathon.

    Ride:Massive slab of the new ATPU Leap Foam makes it feel extremely bouncy, responsive, light, and fast — designed for stride runners with a flat plate situated higher in the midsole. The more aggressively the reviewer ran, the more the shoe responded.

    In their words: "felt a lot more racy than the Edge" · "faster shoe out of these two"

    — FORDY RUNS , source

Who should buy which

Use cases the reviewers above actually call out — one bullet per distinct take, attributed. Where reviewers converge (e.g. "5K to half marathon" appearing across multiple takes) the agreement is a stronger buying signal than any single voice.

Consider the Nike Vaporfly v4 if

  • Shorter road racing (5K-10K) for runners whose feet fit the snugger upper — Doctors of Running
  • Half marathon and below race day for efficient forefoot strikers willing to go all-out. — FORDY RUNS
  • Short-distance races and turn-heavy courses — Believe in the Run
  • 5K and 10K racing for runners wanting a light, direct, snappy carbon racer — Ben Is Running
  • Short-distance racing up to 10K, or up to half marathon for more seasoned runners wanting minimal cushion — The Run Testers
  • 10K to half marathon racing, track miles, shorter fast efforts — The Run Testers

Consider the ASICS Metaspeed Sky Tokyo if

  • Half marathon to marathon racing for stride-oriented runners wanting late-race impact protection — EDDBUD
  • Half marathon effort for mid/forefoot strikers wanting soft cushioning — EDDBUD
  • Lighter runners who can maintain form over long races — EDDBUD
  • Race day shoe for 5K through marathon distances. Suits stride-lengthening runners especially but works well for all neutral runners seeking a top-tier carbon plate racer. — The Run Testers
  • Marathon racing on flatter courses when not chasing an outright time; reviewer already PB'd a half marathon in it and rates it slightly better than the Sky Paris — The Run Testers
  • 10K racing and potentially marathon distance — The Run Testers
Methodology. Specs come from manufacturer data and authoritative third-party catalogs. Reviewer verdicts are summarized, not copied verbatim, and each links to its source. We weight reviewer voices differently based on testing methodology and credentials — clinical and lab-verified sources carry more weight than community commentary — but the specific weights stay internal. Never sponsored, never paid placement.