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40Race Shoe FinderEst. 2023 · London

Head to head

ASICS Magic Speed 5vs
ASICS Superblast 3

Magic Speed 5

£130

Typical street price · £150 RRP

38mm — road legal
Superblast 3

£200

Typical street price · £200 RRP

■ 45.5mm — over limit

Choose the Magic Speed 5 if…

  • Your race is run under World Athletics rules — this one is legal at 38mm and the Superblast 3 is not.
  • You want the lighter shoe: 218g against 248g, a 30g difference you will feel late in a race.
  • Money matters: it is selling around £130 against £200, and the time difference between them is smaller than the price difference suggests.
  • You are racing 10K — built for it, where the Superblast 3 is not.

Choose the Superblast 3 if…

  • You want the bigger return: 2.2–3.4% economy gain against 2–3.1%, and that gap widens the longer you are out there.
  • You want more shoe underneath you late on: 45.5mm against 38mm, which is protection over a long race rather than speed over a short one.
  • You want more races out of one pair: about 700km of competitive life against 500km.
  • You are racing Ultra / 50K+ — built for it, where the Magic Speed 5 is not.
  • You would rather buy on measured numbers: this shoe's specs are manufacturer-confirmed, the Magic Speed 5's are estimated.

What does this
mean for you?

Every figure below is recalculated from your race and your current time. The gap between two shoes is not fixed — it grows with how long you are on your feet.

Over marathon from 3:45:00

Time back
Magic Speed 5: 83s–158sSuperblast 3: 97s–179s
Cost per second saved
Magic Speed 5: £0.14Superblast 3: £0.13

Ranges, not promises. Both figures are against a standard trainer, and the honest answer for most runners is that the difference between two shoes of this class is smaller than the difference a month of decent training makes.

Every number.

010203040503831
Magic Speed 5
0102030405045.537.5
Superblast 3

What you pay

Street price
Magic Speed 5£130■
Superblast 3£200

What the shoe is actually selling for across the shops we read, not its RRP.

RRP
Magic Speed 5£150
Superblast 3£200

List price. Almost nobody pays it for a race shoe.

Cost per race
Magic Speed 5£16■
Superblast 3£18

Street price divided by the races the foam stays fast for.

Cost per second saved
Magic Speed 5£0.14
Superblast 3£0.13■

The whole-life question: what each second of race time costs you.

What it does

Estimated saving
Magic Speed 583s–158s
Superblast 397s–179s■

Against a standard trainer, over the distance and time set above.

Economy gain
Magic Speed 52–3.1%
Superblast 32.2–3.4%■
Built for
Magic Speed 510K · Half · Marathon
Superblast 3Half · Marathon · Ultra
Best use case
Magic Speed 5The best entry point to carbon. Real plate, real super foam, durable enough to train in, and about half the price of the flagships.
Superblast 3The best plateless shoe in the world and a cult favourite for good reason. Enormous stack, superb foam, and it will train and race happily for 700km.

How it is built

Weight
Magic Speed 5218 g■
Superblast 3248 g

Manufacturer figure at men's US 9.

Stack (heel)
Magic Speed 538 mm
Superblast 345.5 mm
Stack (forefoot)
Magic Speed 531 mm
Superblast 337.5 mm
Drop
Magic Speed 57 mm
Superblast 38 mm
Foam
Magic Speed 5FF Blast Turbo
Superblast 3FF Turbo+ over FF Blast+
Plate
Magic Speed 5carbon fibre
Superblast 3none

Rules and fit

Road legal
Magic Speed 5Yes (38 mm)■
Superblast 3No (45.5 mm)

World Athletics caps road racing shoes at 40 mm of stack.

Fit
Magic Speed 5standard
Superblast 3standard
Stability
Magic Speed 5stable
Superblast 3stable

Neither is better in the abstract — it depends on your stride.

Race life
Magic Speed 5~500 km
Superblast 3~700 km■

How long the foam stays fast, not how long the shoe survives.

Data confidence
Magic Speed 5estimated
Superblast 3verified■

■ marks the better figure where one is genuinely better. Fit, foam, drop and stability carry no mark — they depend on your foot and your stride, not on which shoe is superior.

In your size.

Where to buy

Your UK size

Best price today — some sizes£119at Startfitness — £31 under RRP

9 retailer checks failed on the last run, so their prices are missing rather than wrong.

Prices are captured when the site is built and stamped with the time of that check. We never rank a retailer by what it pays us; where a link earns a commission it is marked sponsored and the price you pay is unchanged.

Where to buy

Your UK size

Best price today — some sizes£199.90at Startfitness — £0.10 under RRP

9 retailer checks failed on the last run, so their prices are missing rather than wrong.

Prices are captured when the site is built and stamped with the time of that check. We never rank a retailer by what it pays us; where a link earns a commission it is marked sponsored and the price you pay is unchanged.