Saucony Endorphin Speed 3 vs Tracksmith Eliot Runner: Two PEBA Training Shoes Compared

Introduction

PEBA foam has reshaped what a daily training shoe can feel like, and two of the most interesting examples on the market take very different approaches. The Saucony Endorphin Speed 3 leans into energy and ease, while the Tracksmith Eliot Runner asks a little more of you and gives back in strength and connection. Here is how they compare.

Midsole and Ride Feel

The PEBA foam in the Endorphin Speed 3 is much softer and much more responsive at slower paces. It has a distinctive beaded look, similar to old school Adidas Boost, and it provides a soft, cushioned feel that combines with the plate to give the shoe its snap. Out of the box, it delivers an exciting, energetic ride the moment you lace it up.

The Eliot Runner also feels soft and cushioned, especially at walking and standing pace, but the source of that comfort is different. It takes some time to break in and it never quite delivers that super energetic feel. It requires you to put effort into your running to get the most out of it.

Inside the Eliot Runner: Sock Liner Comfort

Dig into the Eliot Runner and lift out the insole, and the real story appears: its softer feel comes from a removable sock liner that is surprisingly thick. That liner is made with supercritical PEBA, which feels squishy, lightweight, and airy, providing a nice cushion and squish the moment your foot goes in.

This layered construction is part of why the Eliot Runner rewards patience. It helps build strength while still using modern materials, and it keeps a fair bit of responsiveness for when you want to pick up the pace.

Which Shoe Fits Your Running

The Endorphin Speed 3 makes running feel noticeably easier. Thanks in part to its big rocker up front, it can feel like it immediately makes running 10 to 20 percent easier, which makes it a great option when you want to hit faster aerobic paces or simply enjoy the ride more.

The Eliot Runner is the better match for runners who want to feel connected to the ground and get stronger in the process. It will not hand you free speed, but it builds something useful with every run.

Buying Advice

Choose the Endorphin Speed 3 if your priority is an energetic ride from day one and an easier path to faster aerobic paces. The combination of soft, responsive PEBA foam and a plate makes it the more immediately rewarding shoe.

Choose the Eliot Runner if you want a shoe that develops with you: modern supercritical PEBA comfort underfoot, but a ride that encourages effort, strength, and a stronger connection to your running.

Conclusion

Both shoes use PEBA foam, but they serve different runners. The Endorphin Speed 3 makes every run feel easier and livelier, while the Eliot Runner trades instant energy for long-term strength and a more connected ride. Matching the shoe to your goal matters more than picking a winner.