ASICS
Magic Speed 4
Product Judgment
Strong
8.1
Category: Speed Trainer
Release year: 2025
Price Judgment
Unjustified
Common retail price: ~$200
Availability: Phasing Out
Description
The ASICS Magic Speed 4 is a high-stack, carbon-plated speed trainer designed for uptempo workouts and longer races. Positioned as a Strong option in the super trainer segment, it balances maximal cushioning with a secure, race-ready fit.
Running in the Magic Speed 4 delivers a firm, stable, and consistent ride with excellent durability, though the forefoot feels stiff and less energetic than some rivals. Its polished, controlled character excels at tempo paces but lacks the excitement of softer, more flexible super trainers.
This shoe is best suited for neutral runners seeking a reliable, durable carbon trainer for tempo runs, long efforts, and marathon training. While it may not satisfy those looking for plush comfort or explosive energy return, it stands out as a dependable, high-mileage option for structured speedwork and longer races.
Performance Scores
Comfort
7Firm cushioning and a narrow, low-volume fit limit comfort for wider feet and easy runs.
Energy Return
7The FF Turbo foam and carbon plate provide moderate energy return but lack forefoot pop.
Stability
8Torsional rigidity and a secure upper deliver good stability for a high-stack, plated trainer.
Durability
9Robust outsole and upper construction offer excellent durability for high-mileage use.
Fun to Ride
7The ride is polished and consistent but feels stiff and less lively than some competitors.
Run Fitness
Daily
7Works for daily training if you prefer a firm, plated ride but lacks easy-day comfort.
Long
8Maximal cushioning and stability support long uptempo runs and marathon efforts.
Tempo
9Stiff plate and responsive foam excel at tempo paces and structured workouts.
Race
8Performs well for longer races but lacks the explosive feel of top-tier supershoes.
Recovery
5Firmness and stiffness make it less suitable for slow or recovery runs.
Pros & Cons
- Durable outsole and upper
- Stable for a plated shoe
- Maximal cushioning
- Secure fit for uptempo runs
- Stiff, less lively ride
- Narrow fit limits comfort
- Not ideal for easy runs
The robust outsole and upper construction deliver excellent durability for high-mileage training.
Torsional rigidity and a secure upper provide notable stability for a high-stack carbon-plated trainer.
Maximal stack height offers strong shock absorption and protection for long efforts.
The precise, locked-in fit supports confident uptempo running and racing.
The ride feels stiff and lacks the forefoot pop and excitement found in some competitors.
The narrow, low-volume fit and pointy toe box may be uncomfortable for wider or high-volume feet.
Firmness and late rocker transition make it less comfortable for slow or recovery runs.
Specifications
Best for paces
3:45–5:15 min/km
Drop
8 mm
Stack height
43.5 mm heel / 35.5 mm forefoot
Weight
240 g
Drop
8 mm
Stack height
43.5 mm heel / 35.5 mm forefoot
Weight
240 g
Pronation
N/A
Width
medium
Terrain
Road
Technologies
FF BLAST TURBO, Full-length carbon plate, ASICSGRIP rubber outsole
Plate
Carbon
Best for paces
3:45–5:15 min/km