Li-Ning Feidian 5 Ultra Review: The Discontinued Max-Stack Racer Still Worth Hunting Down

Introduction

Some shoes disappear from shelves quietly, and the Li-Ning Feidian 5 Ultra is one of them. It is the previous generation of Li-Ning’s max-stacked, plate-trick marathon racer, the shoe that has been called one of the best marathon shoes currently available, and it has now been succeeded by the Feidian 6 Ultra. That makes this the right moment to look back at it: not as a nostalgic curiosity, but as a genuinely competitive racer that may still be findable at a steep discount.

This review comes out of a 12-mile workout session with kilometer repeats run on rolling hills, so the impressions below are based on real pace work rather than a walk around the block. If you have been curious about the new wave of high-stack shoes from Chinese running brands, this is one of the most important models to understand.

What Makes the Feidian 5 Ultra Different

The Feidian 5 Ultra sits at the very top of Li-Ning’s race lineup. Where the Feidian 6 Elite is the more accessible, softer, lower-to-the-ground option, the Ultra is where the brand stuffs all of its technology into a single shoe. It carries roughly 40mm of stack in the heel, with a midfoot bump that pushes past 50mm on the outer edge. The plate geometry sits on two different planes, which is what makes the shoe technically non-compliant for sanctioned competition. It is, in the vocabulary runners now use casually, an illegal shoe.

Underfoot, the construction centers on the Boom Capsule: a very soft core wrapped in a slightly firmer layer of PEBA foam. The heel foam is dense to the touch, bordering on firm, and the shoe includes aggressive midsole cutouts along with an enormous amount of design detail, down to graphics on the interior of the shoe and a small Easter egg on the tongue.

One surprising spec: at around 204g per shoe (measured at roughly 202.5g and 204.5g for right and left), the Feidian 5 Ultra is about 20g lighter than the newer Feidian 6 Ultra, despite the denser-feeling foam. For a shoe with this much stack, that is remarkably light.

Workout Test: Fatigued Kilometer Repeats

The test session was a longer warm-up at around 6:00-6:30 per mile, followed by five kilometer repeats run at roughly 3:30-3:35 per kilometer, all over hills, without stopping. That structure, sometimes called fatigued repeats, prioritizes staying healthy and accumulating miles near marathon effort over flat-out 5K speed.

The first impression out of the door was firmness. The heel foam feels genuinely dense in hand, and the upper has quirks: a pointy toe box, a lacing column that runs slightly crooked up the instep, and a tongue that gives a soccer-cleat-like feel. The fit is not what most Western models offer, but the midsole is strong enough that many runners will overlook it.

Once moving, though, the character changes completely. The shoe places you up on the midfoot and forefoot, and the ride comes alive the harder you push. At around 6:00 pace and faster, it produces an effortless, direct, propulsive glide with a distinct bounce spot under the ball of the foot. The firmness that felt alarming in hand simply did not translate into a harsh ride on the run, likely because the geometry keeps you off the firm rear portion entirely.

The kilometer repeats landed near marathon effort, and the pace clock told the story: 6:46, 6:31, 6:18, 6:05, and 6:06 for the opening six miles, then kilometers at 5:45, 5:40, 5:43, 5:41, and 5:39 per mile pace, all on hills, finishing 12 miles at 6:27 average. The shoe was not the reason for the pace, but it never got in the way, and the cushioning meant the session did not shred the calves the way a lower, firmer racer would.

How It Stacks Up Against the Competition

This category, max-stack race shoes with more cushion than a traditional super shoe, is where the most exciting running shoe innovation is happening right now. The Feidian 5 Ultra has three natural rivals.

Nike Alphafly 3. The shoe that pioneered putting multiple technologies into a race shoe, with its forefoot air pod unit delivering a genuinely unique ride. It is legal at 38.3mm and lighter at around 220g, but it has now gone well over two years without an update, and the market has moved past it. The Feidian offers more stack, a more aggressive stance, and a firmer, more direct feel. The Alphafly can improve most in underfoot comfort and weight.

Adidas Prime X Strung (original). The OG illegal racer, at 49.5mm in the heel and around 274g, built on Lightstrike Pro foam. It excels at giving explosive bounce while remaining protective and comfortable at slower paces. The Feidian is lighter, firmer in the rear, and considerably more aggressive in its forward stance.

Li-Ning Feidian 6 Ultra. The direct successor, at roughly 220g with similar stack. The newer version is softer, wavier in its design language, and more refined overall. But the older 5 Ultra feels more dialed off the midfoot: slightly faster, more aggressive, and more direct. Runners who like a robust, firm forefoot rather than a super-soft squish will likely prefer the 5.

The closest ride comparison is the Adidas Adios Pro 3’s firmer, sturdier feel blended with the softer bounce of the Adios Pro 4, plus a classic Li-Ning Boom bounce and the direct toe-off of the original Saucony Endorphin Elite.

Who This Shoe Is For

The Feidian 5 Ultra is a power shoe. It rewards runners who are moving fast and driving hard off the forefoot, and it came alive most at 6:00 pace and below. At easy daily paces of 8:00-8:30 per mile, it is not the natural choice, even though the firm, stable heel gives it more accessibility than the geometry suggests.

Where it genuinely excels is marathon training: long runs, tempo sessions, threshold work, and long grinding sessions at or near race pace. The combination of 50mm of effective forefoot stack, a bounce-rich midfoot, and a protective ride means you can run hard workouts without paying the usual recovery cost in your calves. It doubles as an excellent long-run shoe, holding up comfortably over 12 miles and leaving plenty in the tank for the cooldown.

Things to Consider Before Buying

The obvious issue is availability. This is a previous-generation model, and remaining stock is limited, with only a handful of sizes left at the discounted price at the time of checking. The colorway in question is called Pool Green, and it leans into a Carolina-themed palette of blue and green with an old-school, preppy aesthetic.

The second consideration is the upper. Li-Ning’s uppers remain the weak link in an otherwise excellent package: the fit is unusual for runners used to Western models, with a pointy toe and off-kilter lacing. The midsoles have been good enough that most testers tolerate it, but it is worth acknowledging.

Finally, this is a 40mm-plus shoe that is not legal for sanctioned competition. For the overwhelming majority of runners, that is irrelevant: nobody is checking your shoes. It only matters if you are racing at an elite level where equipment rules are enforced.

Verdict: Is It Still a Top Marathon Shoe?

Yes. The Feidian 5 Ultra earned top-tier marks after this test, and the hype around it as one of the best marathon shoes available holds up. It is a rare combination: hugely cushioned and protective, yet direct, aggressive, and not mushy. It delivers bounce, stack, and speed assistance in a 204g package, and it does not beat you up in the process.

At full retail it sits in the $300-400 range, which is steep. But the real story is the discount: this shoe has been spotted at around $208, roughly 45% off, in limited sizes. If you can find your size at that price and you want a marathon workout shoe, tempo shoe, or long-run shoe with elite-level cushioning and a genuinely fast ride, it is one of the best value propositions in running right now. It is also a piece of the movement that has put Li-Ning firmly among the top running shoe brands, with no misses in the race lineup so far.

Conclusion

The Li-Ning Feidian 5 Ultra is a special shoe: aggressive, bouncy, cushioned, protective, and surprisingly light. It holds its own against the Alphafly 3 and the original Prime X Strung, and depending on your preference for firmness, it may even outperform its own successor. If discontinued stock is still sitting in your size at a discount, it is absolutely worth the hunt.