Asics Metaspeed Sky Tokyo vs On Cloudboom Strike 2:
Which to Choose
Verdict
These are genuinely close shoes, so the honest answer is that it depends on weight versus comfort. If your priority is the lightest, firmest, most aggressive turnover for a PB attempt, the Metaspeed Sky Tokyo's 163g build wins. If you'd rather give up ~37g for a slightly softer, more composed PEBA ride that holds up over a long marathon effort, the Cloudboom Strike 2 is the more forgiving racer. Either way you're getting a dedicated, neutral, fast-pace-only tool — not a daily trainer.
Pace
6 of 6
Cushioning
5 of 6
Responsiveness
6 of 6
Stability
2 of 6
Drop
6 mm
Support
Neutral
Plate
Carbon
Distances
HalfMarathon
Pace
6 of 6
Cushioning
5 of 6
Responsiveness
6 of 6
Stability
2 of 6
Drop
5 mm
Support
Neutral
Plate
Carbon
Distances
HalfMarathon
At a Glance
Asics Metaspeed Sky TokyoOn Cloudboom Strike 2
Who Should Choose Each Shoe
Choose
Asics Metaspeed Sky Tokyo
Choose the Metaspeed Sky Tokyo if you are a lean, efficient forefoot or midfoot striker who wants the lightest, most aggressive tool on the shelf and trusts your form to handle a firm, narrow, propulsive platform. At 163g with that race-firm A-TPU snap, it's the pick for runners who feel every extra gram late in a race and want the most immediate, turnover-rewarding ride for half and full marathons at genuine race effort.
Choose
On Cloudboom Strike 2
Choose the Cloudboom Strike 2 if you want a true super shoe for the same fast paces but would trade a little weight for a marginally more cushioned, composed feel over 26.2 miles. The PEBA Helion HF foam and forefoot pods sit slightly softer and more settled underfoot, and its lower effective drop suits committed forefoot strikers — making it the better bet for runners who find the most aggressive racers punishing late in long efforts but still want carbon-plated propulsion.
Head-to-Head
Start with the specs, because they explain the ride. The Metaspeed Sky Tokyo is built on FF Leap, Asics' A-TPU superfoam, over a full-length carbon plate, with a 39mm heel / 33mm forefoot stack and a 6mm drop (Asics labels it 5mm). The Cloudboom Strike 2 pairs On's PEBA-based Helion HF foam with the carbon Speedboard and CloudTec Sphere forefoot pods, landing at a very similar roughly 39.5mm heel / 34.5mm forefoot stack with a claimed 5mm drop that calipers closer to 3–4mm. So cushioning height, plate concept, pace zone (both optimal around 3:00–3:30 min/km), and intended distances are effectively the same — neither is plusher or taller in any way a runner would notice. The headline difference is weight: the Metaspeed is featherlight at 163g in a men's US 9, while the Cloudboom Strike 2 comes in around 200g — a real ~37g gap that makes the Asics feel noticeably quicker to flick over at the end of a hard effort. Ride character diverges too: the A-TPU in the Metaspeed feels race-firm and springy with an aggressive, toe-nudging rocker, whereas the PEBA Helion HF with its forefoot pods reads as slightly more cushioned and settled underfoot, trading a sliver of snap for a touch more comfort and composure over a long, sustained marathon effort. Both ride tall and narrow and both feel tippy at easy jog pace — stability is low on each, so neither is the answer if you want support. The On's lower effective drop also leans harder into forefoot striking, while the Asics' upper is the more minimal, speed-first wrap.
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