Plated Marathon Training Shoes Compared: New Balance, Adidas and Saucony

Introduction

If you are running big marathon mileage, plated training shoes stop being a luxury and start being a tool. The idea is simple: high-stack foam plus a plate reduces the strain of long, frequent runs so you can recover fast enough to hit the next session hard.

Three shoes keep coming up in this category: the New Balance FuelCell SC Trainer v2, the Adidas Adizero Boston 12 and the Saucony Endorphin Speed 3. All three use foam plus a plate, but they sit at very different points on the softness-firmness spectrum, and that shapes where each one belongs in a rotation.

How We Evaluate Plated Trainers

A plated trainer has to do a job a daily trainer or a race shoe cannot. For marathon builds, the priorities are protection over long distances, enough cushioning to speed up recovery between sessions, and a ride that still feels good at moderate paces.

It also matters how firm the midsole feels. Softer midsoles flatter some runners and bottom out for others, especially on 18 to 20 mile long runs. Firmer midsoles reward faster paces but often need a long break-in.

New Balance FuelCell SC Trainer v2

The SC Trainer v2 streamlines the original, trimming the oversized stack down to roughly 40 mm at the heel. The v1 was one of the first trainers to use a plate for recovery-style, everyday miles rather than pure speed, and the v2 keeps that idea while making the shoe less unwieldy.

It uses New Balance FuelCell foam, which appears to be a slightly different formulation from the one in the Rebel: it looks like a different compound and does not feel as soft under thumb pressure. That firmer-than-Rebel feel, combined with the carbon fiber plate, should add more stability than the softer Rebel offers. At a sale price of $140, down from the typical $180 retail, it is one of the more attainable plated trainers on the market.

This is the easy and recovery run option of the three. It is not built for aggressive workouts; it is built to take the burden off your legs during medium days and long runs when you are doubling frequently and need to come back for tomorrow’s session.

Adidas Adizero Boston 12

The Boston 12 is the firm, speed-oriented workhorse of this trio. Expect a break-in period of roughly 50 to 70 miles before the ride settles, and expect it to come alive at faster paces: when pushing roughly 6:30 mile pace or quicker in the forefoot, the shoe rewards you noticeably.

Despite the firmer feel, it offers a protective, higher-stack platform for workouts, which is why it earns a spot as the go-to workout shoe in a marathon rotation. Around 230 to 250 miles in two months is realistic workload territory for this shoe, and it is a candidate for a long life in the 400 mile club.

The Boston 12 is the right pick when you want one plated shoe that can handle real tempo work while still protecting you through a 100-mile week. Just be patient through the break-in and save it for the faster sessions.

Saucony Endorphin Speed 3

The Endorphin Speed 3 is the most fun of the three to run in, thanks to bouncy PWRRUN PB-style foam and a plastic plate. Over roughly 600 miles across two pairs, though, it showed its limits as a plated trainer for bigger runners on long runs.

The issue is protection. Despite the energetic foam and the plate, it can feel like it is bottoming out, and on 18 to 20 mile long runs it ended up feeling a little too soft without quite enough pep for faster paces. It remains a genuinely enjoyable shoe and a solid fast-train option, but it asks something of the runner.

If you are lighter, or you want a plated shoe primarily for uptempo days rather than long-run protection, the Speed 3 still earns its place. As a do-everything plated trainer for high mileage marathon builds, it falls just short of the other two.

How to Build Your Rotation

In practice, these three shoes divide the work cleanly. The SC Trainer v2 is the softer, easy and recovery plated option, noticeably softer under thumb than the Boston 12 and clearly heavier in the hand than the Endorphin Speed 3 while feeling about the same as the Boston 12 in weight.

The Boston 12 stays the protective, higher-stack workout shoe for faster paces, while the Endorphin Speed 3 covers the fun, bouncy middle ground, with the caveat that it is less protective on the longest runs. Holding a plated trainer in rotation alongside a plain daily trainer is a reasonable approach at very high mileage, even if a plated shoe should not become your everyday trainer.

The key is matching the shoe to the session: long and easy miles to the softest option, workouts to the firmest, and anything in between to whatever your legs need that day.

Conclusion

For marathon training at high mileage, the SC Trainer v2 is the recovery-friendly pick, the Boston 12 is the firm workout workhorse, and the Endorphin Speed 3 is the fun-but-less-protective middle option. Choose based on which sessions dominate your week, and the rotation will take care of the rest.