Running shoes

A running shoe is a small piece of engineering: a foam midsole tuned for impact and energy return, a rubber outsole for grip and wear, and a knitted upper to hold the foot — refined over decades and, in the last few years, upended by carbon plates and exotic foams. This is a plain-language survey of that world: who makes them, what goes into them, the models people actually buy, and how the right pair gets recommended for tired or arthritic joints.

Snapshot as of June 2026. Model names track the current generation where one is obvious; prices are approximate US recommended prices in dollars and move with sales and new releases. Stack and drop figures are rounded, representative numbers — they vary by size and revision.

Anatomy of a running shoe

Almost everything that distinguishes one shoe from another lives in a few parts. The midsole is the cushioning foam; its total thickness is the stack height, and the difference between the heel stack and the forefoot stack is the heel-to-toe drop. Many modern shoes also curve the sole up at the toe — a rocker — to help the foot roll forward.

The major brands

The market splits between global sportswear giants (Nike, Adidas) and running-first specialists (Brooks, Asics, Saucony, Hoka, New Balance), with a wave of newer design-led names (On, Altra) carving out niches. Each leans on a signature midsole foam — the foam is the technology.

Popular models, briefly

A handful of shoes show up again and again on shop walls and start lines. Short bios of the ones worth knowing:

• Nike Pegasus — the default daily trainer. Around since 1983 and now in its forties as a model number, it’s the safe, do-everything choice: firm-ish foam, a 10 mm drop, durable enough for most people’s whole training week. If someone asks “what running shoe should I get,” this is the boring-but-right answer.
• Adidas Ultraboost — the shoe that made Boost foam famous in 2015. Bouncy and cushioned, but heavier and as much a lifestyle sneaker as a serious trainer; you’ll see far more on the street than at a 10K.
• Hoka Clifton — the shoe that mainstreamed maximal cushioning. Improbably soft for its weight, with a low drop and a rocker that rolls you forward. The gateway Hoka, and a constant recommendation for sore knees and long days on the feet.
• Hoka Bondi — the Clifton’s plusher, heavier sibling and one of the most cushioned shoes on sale. The one podiatrists and nurses reach for when comfort underfoot beats everything else.
• Brooks Ghost — the neutral daily trainer that specialty shops sell by the truckload. Smooth, unremarkable in the best way, and a common first “proper” running shoe.
• Asics Gel-Nimbus — deep, premium cushioning for easy miles; its stability cousin, the Gel-Kayano, adds support for runners whose feet roll inward.
• New Balance 1080 — a plush, versatile daily trainer with a soft Fresh Foam X midsole, and available in widths most rivals don’t offer.
• Saucony Triumph — a max-cushion daily trainer beloved for its soft-but-stable ride; the Endorphin line is the brand’s fast side.
• Nike Vaporfly / Alphafly — the original “super shoes.” A carbon plate sandwiched in ultralight ZoomX foam, they cut race times enough to rewrite the record books (see below).
• Hoka Speedgoat — the benchmark trail shoe: grippy Vibram outsole, big cushioning, named after an ultrarunner. The reminder that road shoes are only half the story.

How much foam? Stack height compared

Stack height — how much foam sits under the heel — has crept ever higher. A 1990s racing flat had barely any; today’s max-cushion shoes pile on 40 mm or more, and World Athletics now caps road-racing shoes at 40 mm to keep the arms race in check.

Drop: from zero to traditional

Heel-to-toe drop changes where the load lands. A high drop (10–12 mm) tips you onto the forefoot and tends to take strain off the calf and Achilles, shifting it toward the knee; a low or zero drop keeps the foot flat and loads the calf and Achilles more, which some runners prefer and others find aggravating. There is no universally “correct” number — it’s about what your body is used to.

Categories: matching shoe to purpose

• Daily trainers — the everyday workhorses (Pegasus, Ghost, Wave Rider). Durable, versatile, the bulk of most runners’ miles.
• Max-cushion — the softest, tallest shoes (Hoka Bondi, Gel-Nimbus, NB 1080) for comfort on long, easy runs and recovery days.
• Stability — shoes that gently resist the foot rolling inward (overpronation), using a firmer medial post or guide rails (Adrenaline GTS, Gel-Kayano, 860). Note that modern guidance leans on comfort over strict gait-matching.
• Racing & “super shoes” — carbon-plated, PEBA-foam rockets (Vaporfly, Adios Pro, Metaspeed, Endorphin Pro) built for race-day speed, not durability.
• Trail — aggressive lugged outsoles and rock protection for off-road (Speedgoat, Lone Peak, plus Salomon and La Sportiva, who own the technical end).

The super-shoe era

In 2017 Nike released the Vaporfly 4%, claiming it improved running economy by that much. The recipe — a stiff carbon-fibre plate embedded in a thick slab of ultralight, ultra-resilient PEBA foam — turned out to be real, and transformative. Eliud Kipchoge ran the first sub-two-hour marathon (in the controlled 2019 INEOS 1:59 event) in a prototype Alphafly, and within a few years almost every road record had fallen to plated shoes. World Athletics responded with rules: a single rigid plate and a 40 mm stack limit for road racing. Every major brand now sells its own super shoe, and the technology has trickled down into everyday trainers.

Shoes for arthritis and sore joints

Running shoes aren’t literally prescribed like medication, but podiatrists, physiotherapists and rheumatologists very often recommend specific shoe features for painful feet and joints — and it’s why cushioned, rocker-soled shoes have found a second life well beyond running. For the bigger picture on the condition itself, see the guide to arthritis.

• Osteoarthritis of the knee, hip or foot. Soft, high-stack cushioning reduces impact loading, and a stiff rocker sole lets the foot roll through a stride without flexing painful joints as much. This is the single biggest reason brands like Hoka — thick foam plus Meta-Rocker geometry — get suggested to people who don’t even run.
• Big-toe arthritis (hallux rigidus / limitus). When the big-toe joint stiffens and hurts to bend, a rigid rocker sole is a classic conservative measure: it carries the foot over the toe-off so the joint barely has to move. Maximal rocker shoes are a common off-the-shelf option.
• Plantar fasciitis & heel pain. Cushioned heels, arch support and often a slightly higher drop to offload the plantar fascia and Achilles are typical recommendations.
• On the feet all day. Nurses, hospitality and retail workers gravitate to max-cushion shoes (Bondi, Clifton, 1080) for the same reason — sustained comfort under load, not running performance.
• Wide, swollen or sensitive feet. Roomy toe boxes (Altra, Topo, New Balance’s width range) reduce pressure on bunions and arthritic forefeet.

One caveat worth knowing: the long-held idea that you must match a “stability” shoe to your exact pronation type is weakly supported by the evidence. Research increasingly points to comfort as the best predictor of whether a shoe suits you — the so-called comfort filter. The most useful advice is still the oldest: try several on, run in them, and keep the pair that feels best.

How to choose

• Start with purpose. Easy daily miles, race day, trail and “on my feet all day” want different shoes. Most people only need a good daily trainer.
• Prioritise fit and comfort. A thumb’s width at the toe, no heel slip, no pressure points. Comfort beats spec sheets.
• Change one thing at a time. Big jumps in drop or stack can upset tissues that were used to the old shoe; transition gradually.
• Rotate and replace. Foam compresses; many runners replace shoes every few hundred miles and rotate two pairs to let foam recover.
• Visit a specialty shop if you can — trying several pairs on a treadmill beats guessing from reviews, including this page.

Sources

• World Athletics — technical rules on shoe construction (stack height, plates).
• Runner’s World — shoe reviews and buying guides.
• The Royal College of Podiatry and NHS — osteoarthritis, on footwear for foot and joint conditions.
• Nigg et al., “Running shoes and running injuries” (the comfort-filter / preferred-movement-path work).

Some of the figures in the charts and tables on this page were compiled with the help of AI tools and may contain errors or be out of date. They are shared in good faith for general interest only — not as professional, medical, financial or purchasing advice — and should be checked against the cited primary sources before you rely on them.