Endorphin Speed
The original Endorphin Speed is a lightweight road shoe for speed training and race day. Flexible PWRRUN PB works with SPEEDROLL and a semi-rigid nylon plate to deliver propulsion with a more forgiving feel than the carbon-plated Pro. At 221g with an 8mm drop and 35.5/27.5mm stack, it suits tempo sessions, longer fast runs and racing. ABC-MART's Japan release launched it on August 1, 2020.
- Intended uses:
- Race
Specs
Among 865 listed shoes, this is a lighter Speed Trainer
- Weight
- 221g
- Of 811 known values: 126 lower, 2 equal, 683 higher. The marker uses the midpoint of equal values.
- lighterLower 15.8%, including ties / average -46g
- Drop
- 8mm
- Of 815 known values: 409 lower, 237 equal, 169 higher. The marker uses the midpoint of equal values.
- Standard64.7th percentile (tie midpoint) / average +1.2mm
- Stack height (heel/forefoot)
- 35.5 / 27.5mm
- Of 694 known values: 353 lower, 12 equal, 329 higher. The marker uses the midpoint of equal values.
- Standard51.7th percentile (tie midpoint) / average +0.8mm
- Carbon plate
- No
- 83% of 786 known models have no carbon plates
- Midsole
- PWRRUN PB
- Outsole
- -
- Not registered
- Reference price
- $160
- US price
Weight measurement and plate details
- Weight note
- ABC-MART's exact authorized S20597-10 product page lists men's approximate weight as 221g. An exact i-Run S20597-40 page reports a retailer-observed 212g EU42 sample, which is retained as a sample/method difference rather than replacing 221g.
- Plate note
- The exact SHOES MASTER Endorphin Collection article identifies the original Endorphin Speed as a speed-training model with a semi-rigid nylon plate. It is not a carbon plate.
Compare within the database
See where these specs sit in the overall distribution. You can also compare within the same category.
Comparison: All data (865 shoes)
Position map
Weight x stack height
registered average: 265g / 34.7mm (686 shoes)
The scatter plot includes only shoes with both weight and stack height registered.
Spec distributions
Weight
This shoe 221g·registered average 267g (811 shoes)
Drop
This shoe 8mm·registered average 6.8mm (815 shoes)
Stack height
This shoe 35.5mm·registered average 34.7mm (694 shoes)
Items with missing numeric values are excluded. Sample sizes and measurement conditions vary between models; this distribution is not a performance ranking.