In production · road · Race day · $330
Spray-on upper and carbon Speedboard — On's flagship marathon racer.
Built for race day, at a target pace of 4:50–6:45 /mi on road.
On tuned this midsole soft (4/5 on our cushioning scale). The foam is highly resilient — it gives energy back rather than swallowing it, which is what makes the shoe feel eager when you push. 38 mm of heel stack is the modern daily-trainer sweet spot — enough foam for long miles without losing contact with the road. Combined, the ride reads as explosive at 5/5 responsiveness.
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.
A low 4 mm drop encourages a midfoot landing and keeps the ankle working through a fuller range. The rocker is aggressive: the sole is curved and stiff enough to tip you into the next stride on its own, which saves the calf on long runs but feels strange when you slow right down. 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.
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 200 miles from the outsole, about $1.65 per mile at $330.
For the foams and plates On uses across its line, read the On brand guide.
Measured against the 542 currently-available shoes in the catalog. The bar shows where this shoe sits in that range.
Weight
190 g / 6.7 oz
85 g lighter than the catalog median of 275 g
Heel stack
38 mm
2 mm taller than the catalog median of 36 mm
Drop
4 mm
2 mm lower than the catalog median of 6 mm
Price
$330
170 pricier than the catalog median of 160
Responsiveness
5 / 5
Catalog median 3 / 5
Cushioning
4 / 5
Catalog median 4 / 5
Energy return
5 / 5
Catalog median 3 / 5
Durability
~200 mi
Catalog median ~400 mi
Within the On line it is lighter than the brand's median (270 g / 9.5 oz) and sits taller than its median stack (34 mm).
Current shoes with the nearest combination of weight, stack, drop, foam feel and plate.
On Cloudboom Strike 2(2026)
204 g / 7.2 oz · 39 mm · 4 mm drop · Carbon · $290
On finally nails the super shoe: light, rockered and genuinely fast.
Adidas Adizero Adios Pro 5(2026)
173 g / 6.1 oz · 39 mm · 4 mm drop · Carbon · $275
ENERGYRIM carbon rim replaces the rods, freeing more Lightstrike Pro underfoot — 12% lighter than the Pro 4 and steadier at toe-off.
Asics Metaspeed Edge Paris(2024)
183 g / 6.5 oz · 39 mm · 5 mm drop · Carbon · $250
The cadence-runner's Metaspeed: firmer toe-off, quicker turnover.
Asics Metaspeed Sky Paris(2024)
183 g / 6.5 oz · 40 mm · 5 mm drop · Carbon · $250
Built for stride-length runners: light, bouncy and unapologetically a racer.