Saucony Endorphin Speed 5 'Mutant'
The Saucony Endorphin Speed 5 'Mutant' (style S21007-97) is carried by 30 stores SoleScout tracks, priced from $130 to $175. The cheapest listing right now is $130 — $45 under the $175 retail price. 15 sizes are in stock somewhere right now (7–15), and the table below shows the cheapest store for each one. SoleScout doesn't sell this — we link straight to the retailer's own checkout. Solex, listed below, is a separate store run by the SoleScout team.
The Endorphin Speed 5 is built to go fast and feel smooth—whether you're pushing the pace on track night with friends or you're chasing a PR. A newly designed nylon plate and responsive PWRRUN PB cushioning come together for snappy transitions and a fast ride. This is speed you can count on.
Snappy Ride
A full-length semi-rigid nylon plate between two layers of responsive PWRRUN PB foam, giving you a perfect balance of propulsion and cushioning for every stride.
Speed Engineered
Description supplied by a retailer carrying this product.
US Men's Sizes
15 SIZES · USWhere to buy
RETAIL $175 · 30 SOURCES · 31 LISTINGS · OLDEST CHECK 5D AGOSome store links are affiliate links — we may earn a commission at no cost to you. Stores are always ordered by price. Details
Questions
Where can I buy the Saucony Endorphin Speed 5 'Mutant'?
30 retailers tracked by SoleScout currently list this sneaker, starting at $130. The "Where to buy" list on this page names 2 of them and links to the store's own product page.
How much does the Saucony Endorphin Speed 5 'Mutant' cost?
Across every tracked store the price ranges from $130 to $175, against a $175 retail price. Prices change daily; this page reflects the stores' own current listings.
What sizes of the Saucony Endorphin Speed 5 'Mutant' are still available?
US sizes 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 14, 15 are in stock at at least one tracked retailer. The per-size table shows the lowest price for each size.
What is the style code for the Saucony Endorphin Speed 5 'Mutant'?
The manufacturer style code is S21007-97 (some stores write it S21007 97). SoleScout matches this shoe across stores by style code, which is why listings that name it differently still line up.
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SoleScout compares thousands of retailers and does not sell products. Solex (getsolex.com), listed above, is a separate store run by the SoleScout team. Prices and size availability come from each store's own listing and change daily — always confirm on the retailer's page before buying.