Altra
Altra Superior 7
Altra Superior 7. 20.6mm stack, 235g. 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? 20.6 mm stack, cushion 1/5
Descent tolerance
Does it save your toenails on long descents? 20 mm forefoot, heel counter 2/5
Swelling room
Room to grow when your feet swell? 24.7 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? 0.6 mm drop, heel counter 2/5
Full specs
Drop
0.6 mm
Heel stack
20.6 mm
Forefoot stack
20 mm
Weight
264 g
Lug depth
3.5 mm
Plate
No
Waterproof
No
Lab measurements
| Measurement | Value |
|---|---|
| Traction (CoF) | 0.66 |
| Breathability | 3 BR |
| Flexibility | 8.7 N |
| Torsional rigidity | 8.50 Nm |
| Heel counter | 2/5 |
| Energy return | 54.9 % |
| Shock absorption | 89 SA |
| Midsole softness | 42.0 HA |
| Outsole thickness | 1.9 mm |
| Tongue padding | 10.9 mm |
| Insole removable | Yes |
| Insole thickness | 4.6 mm |
| Reflective elements | No |
Fit intelligence
Toebox width
Narrow toebox (78.1 mm vs 96 mm median)
Toebox height
Category-average height (24.7 mm vs 25 mm median)
True to size.
Fit numbers from the lab. Swell guidance: foot care.
Questions before you race
Is the Altra Superior 7 good for 100-mile races?
Passable. 20.6 mm stack, cushion 1/5. 100-miler readiness score 35/100.
Does the Altra Superior 7 fit wide feet?
No. Toebox is 78.1 mm which is narrow. Look elsewhere if you need width.
What is the drop on the Altra Superior 7?
0.6 mm, with a 20.6 mm heel stack and 20 mm forefoot.
Is the Altra Superior 7 good on wet rock?
Traction coefficient of friction on wet lab surface: 0.66. Elite grip on wet rock.
Manufacturer specs · Retailer listing
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swellingRoom: 91/100 (Elite)
descentTolerance: 54/100 (Solid)
gritIngressRisk: 100/100 (Elite)
hotFootScore: 22/100 (Weak)
achillesFriendlyScore: 100/100 (Elite)
hundredMilerReadiness: 35/100 (Passable)