Road Long Run · Road Daily Trainer

Adidas Adizero Prime X 3 Strung 3

Name: Adidas Adizero Prime X 3 Strung 3
Brand: Adidas
Price: 300.00 USD
Availability: InStock
Rating: 7.6 (11 reviews)

A max-stack trainer that rewards break-in and midfoot strikers with trampoline-like bounce and stability, but feels clunky and overpriced for heel strikers and easy-pace runners seeking simpler alternatives.

"literally like a trampoline under here" — FORDY RUNS

Physical blueprint

Where this shoe sits

Weight 286 g

Heel stack 48.0 mm

Drop 7.0 mm

Cushioning Maximal

Best for

Long RunsMarathon RacingTempo & Speed

Suits Forefoot, Heel, Midfoot strikers

Pronation Neutral

Surface Road

Lifespan 600 mi

Specifications

Weight (M9)

286g (10.1 oz)

Stack (Heel)

48.0 mm

Stack (Forefoot)

41.0 mm

Drop

7.0 mm

Midsole

Lightstrike Pro (PEBA)

Plate

Carbon (Dual-layer carbon Energy Rods)

Outsole

Continental rubber

Upper

Strung woven upper

Lacing

Traditional

Fit Profile

Length

True To Size

Forefoot Width

Narrow

Midfoot Width

Snug

Heel Width

Narrow

Lockdown

Good

Toe Box

Roomy

Sizing

True To Size

Ride Characteristics

Cushioning

Maximal

Stability

Neutral

Durability

Expected Miles

600

Outsole

Excellent

Expert reviews · 4 reviewers · grouped per channel

Believe in the Run Youtube ↗

An improved but still in-between max-stack trainer: durable, reasonably fun, and more stable than v2, but not bouncy or fast enough to justify the $300 price tag when shoes like the Evo SL exist at half the cost.

Best for: Daily training and long miles, especially for heavier runners who want a durable max-stack trainer

50 miles tested · source

+2 earlier reviews from Believe in the Run

An improved, lighter Prime X 3 Strung that Robbie and Megan enjoyed running in for long and easy miles, but it's an extra rotation piece at $300 rather than a do-it-all shoe, and the Lightstrike Pro puck could be softer for more trampoline feel.

Best for: Long slow distance and daily miles for runners (especially heavier runners) who want a maximally cushioned, non-racing, super-stacked trainer.

14 miles tested · source

source

EDDBUD Youtube ↑

A heavier, narrower, more rigid shoe aimed at advanced runners who don't need the width offered by the Superblast 3 and want the control of a plate plus energy rods.

Best for: More experienced midfoot to forefoot strikers who want a rigid, controlling ride

40 miles tested · source

+4 earlier reviews from EDDBUD

#9. Go-to for longer runs where you want protection.

source

After 100km the Prime X 3 Strung has won EDDBUD over despite a poor first impression: once broken in, the softened midsole, aggressive rocker, excellent outsole durability, and containing upper make it a versatile long-run training tool, though it's too heavy to race in and the 250 GBP price remains hard to stomach.

Best for: Long runs with mixed paces, recovery after hard sessions, and training when legs are tired; surprisingly swift when cadence increases.

62 miles tested · source

Best for: Heavier runners wanting max cushion, or marathon-style workouts where faster segments come after building strong legs

source

A disappointing, bulky and expensive niche shoe that moves even further away from the magic of the V1; cushioned but not fun, with too much stack for the sake of it and hard to recommend over cheaper alternatives.

Best for: Long runs for neutral runners with good form who want to limit fatigue and don't mind the weight and price

22 miles tested · source

FORDY RUNS Youtube ↑

A game-changing improvement over the X1 and X2 that puts a massive smile on the reviewer's face, but it's a specialist shoe only worth the high price for runners who can consistently hit faster paces on a midfoot or forefoot strike.

Best for: Midfoot/forefoot runners at 8 min/mile (5 min/km) pace or faster; half marathons and possibly 10Ks for runners who want cutting-edge max-stack tech.

source

Kofuzi Youtube ↑

Kofuzi calls the Prime X 3 Strung the wildest and now his favorite Prime X — a fun, slightly dangerous, genuinely useful long-run shoe rather than a gimmick, though at $300 it's not for most runners.

Best for: Long runs with mixed marathon-effort and easy miles, shoe enthusiasts, and heavier runners who worry about blasting through regular carbon-plated shoes.

source

Where it sits among similar shoes

Compared to other road long run in the same lane.

Weight · lower = lighter Men's size 9

Adidas Adizero Prime X 3 Strung 3

286g

HOKA Skyward X 1

306g

Brooks Hyperion Max 3

289g

New Balance SC Trainer 3

278g

Heel stack · higher = more cushioning mm

Adidas Adizero Prime X 3 Strung 3

48.0mm

HOKA Skyward X 1

49.0mm

Brooks Hyperion Max 3

46.0mm

New Balance SC Trainer 3

41.0mm

Drop · higher = more heel-leaning mm

Adidas Adizero Prime X 3 Strung 3

7.0mm

HOKA Skyward X 1

5.0mm

Brooks Hyperion Max 3

8.0mm

New Balance SC Trainer 3

6.0mm

Continue reading

Foam guide

How PEBA / Pebax foam works

Read the explainer

Similar shoes

HOKA Skyward X 1

306g · 5.0mm drop

Brooks Hyperion Max 3

289g · 8.0mm drop

New Balance SC Trainer 3

278g · 6.0mm drop

On Cloudsurfer Max 1

292g · 6.0mm drop

Methodology. Specs come from manufacturer data and authoritative third-party catalogs. Reviewer verdicts are summarized from named, linked sources — never copied verbatim. We weight clinical and lab-tested sources more heavily than community commentary, but the specific weights stay internal. Never sponsored, never paid placement.

Last updated 2026-05-05