adidas
adidas Ultraboost Light
adidas Ultraboost Light. 30.1mm stack, 305g. Retailer specs verified on Running Warehouse.
PR Run scores
PR Run derived fit scores
100-miler readiness
Will this shoe survive a hundred-mile night? 30.1 mm stack, cushion 4/5
Descent tolerance
Does it save your toenails on long descents? 18.2 mm forefoot, heel counter 3/5
Swelling room
Room to grow when your feet swell? 24.0 mm toebox height
Grit resistance
Does dust stay outside the shoe? 3 BR breathability
Hot-day comfort
How well does it breathe in heat? 3 BR / ?% drying
Achilles-friendly
Kind to a cranky achilles? 11.9 mm drop, heel counter 3/5
Full specs
Drop
11.9 mm
Heel stack
30.1 mm
Forefoot stack
18.2 mm
Weight
305 g
Plate
No
Waterproof
No
Lab measurements
Fit intelligence
Toebox width
Narrow toebox (76.1 mm vs 96 mm median)
Toebox height
Slightly shallow (24.0 mm vs 25 mm median)
Runs small. Consider a half size up.
Fit numbers from the lab. Swell guidance: foot care.
Questions before you race
Is the adidas Ultraboost Light good for 100-mile races?
Great. 30.1 mm stack, cushion 4/5. 100-miler readiness score 79/100.
Does the adidas Ultraboost Light fit wide feet?
No. Toebox is 76.1 mm which is narrow. Look elsewhere if you need width.
What is the drop on the adidas Ultraboost Light?
11.9 mm, with a 30.1 mm heel stack and 18.2 mm forefoot.
Is the adidas Ultraboost Light good on wet rock?
Traction coefficient of friction on wet lab surface: 0.46. Solid grip on wet rock.
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swellingRoom: 94/100 (Elite)
descentTolerance: 51/100 (Solid)
gritIngressRisk: 69/100 (Great)
hotFootScore: 22/100 (Weak)
achillesFriendlyScore: 43/100 (Passable)
hundredMilerReadiness: 79/100 (Great)