Endorphin Trainer
The Endorphin Trainer brings race-derived technology to everyday high-mileage road training. Responsive IncrediRUN sits above durable PWRRUN, while a training-tuned three-quarter carbon-fiber plate and SPEEDROLL promote smooth landings and efficient toe-offs. Structured engineered mesh secures the foot over long distances, and XT-900 rubber reinforces high-wear zones for dependable daily grip and durability.
- Intended uses:
- Long run, Daily
Specs
Among 865 listed shoes, this is a high-stack Speed Trainer
- Weight
- 280g
- Of 811 known values: 460 lower, 18 equal, 333 higher. The marker uses the midpoint of equal values.
- Standard57.8th percentile (tie midpoint) / average +13g
- 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)
- 41 / 33mm
- Of 694 known values: 613 lower, 21 equal, 60 higher. The marker uses the midpoint of equal values.
- higherUpper 11.7%, including ties / average +6.3mm
- Carbon plate
- Yes
- 17% of 786 known models have carbon plates
- Midsole
- IncrediRUN / PWRRUN Frame
- Outsole
- XT-900
- Reference price
- $200
- US price
Weight measurement and plate details
- Weight note
- Men's 280g from Saucony Japan official product page; 21RUN also lists approx. 280g men's / 227g women's.
- Plate note
- Saucony Japan official product page states a three-quarter-length carbon fiber plate; 21RUN corroborates the 3/4 carbon-plate construction.
Changes from the previous model
A comparison with the registered values for Saucony Kinvara Pro.
In the registered data, weight is 11g heavier at 280g, heel stack is 1mm lower at 41mm, and forefoot stack is 1mm lower at 33mm.
These are differences between registered values, not a controlled comparison at the same size and measurement conditions. See the notes below the specs for weight conditions.
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 280g·registered average 267g (811 shoes)
Drop
This shoe 8mm·registered average 6.8mm (815 shoes)
Stack height
This shoe 41mm·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.