CoreScore breakdown
0 reviews · 0 expert tests
New Balance
FuelCell SuperComp Trainer v3
Carbon in your daily trainer.
Best for
Not ideal for
Verdict
The New Balance FuelCell SuperComp Trainer v3 is one of the top-rated shoes in its class — a speed trainer scoring 91/100 in SoleHunt's data-driven evaluation, drawing on 0 consumer reviews and 0 independent expert tests. Tipping the scales at 234g, it is notably lightweight for a speed trainer. The 40mm heel stack — a maximal stack — delivers a plush and deeply cushioned ride at 22 HC, returning 80% of impact energy and feeling exceptionally bouncy underfoot. Geometrically, the FuelCell SuperComp Trainer v3 runs on a mid 8mm drop that works with most running gaits, with a 32mm forefoot stack that maintains the traditional heel-elevated geometry runners with tight calves often prefer. Fit-wise, the toebox measures 94mm — roomy, with space for wider feet and swelling on long runs — and the upper is available in D/2E widths. Wider than most carbon shoes. Good for daily use. The removable insole makes it compatible with custom orthotics. It is designed for daily speed training, tempo runs, half marathon, 5k to 10k racing, and performs less well for full marathon racing or recovery.
Lab measurements
Weight
234g
UK size 9 men's
Heel drop
8mm
Moderate
Heel stack
40mm
Forefoot stack
32mm
Midsole hardness
22HC
Very soft
Energy return
80%
Higher = bouncier
Toebox width
94mm
Breathability
80/100
Outsole grip
76/100
Flexibility
64/100
Heel counter
2/5
Ankle hold
Sustainability
18%
Recycled content
Fit guide
Sizing specs
Best for
Not ideal for
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