Nike Lunarglide+ 3 Sizing: Run Big or Small?

Nike Lunarglide+ 3 Sizing, What the Feetlot Database Tells Us

The Nike Lunarglide+ 3 is a well-tracked stability running shoe in the Feetlot database, with 30 verified pairs feeding its sizing profile. Across those owners the pattern is steady: the Lunarglide+ 3 fits a touch shorter than Feetlot's reference shoe, the Nike Air Force 1. In plain terms, it runs about half a size smaller than the Air Force 1, which is exactly what running-focused reviewers report, the performance last is cut leaner than a lifestyle silhouette. Feetlot's offset model places it on the "size up" side of true, and the direction is consistent rather than scattered.

Should You Size Up or Down in Nike Lunarglide+ 3?

Standard fit (most people)

Go half a size up from a true Air Force 1 size. The Lunarglide+ 3 uses a snug performance last with a Flywire-laced midfoot that locks the foot down, so a true-to-size pair tends to feel short at the toes, especially over a longer run when the foot lengthens. Half a size up keeps a thumbnail of room ahead of the longest toe without sacrificing the midfoot lockdown.

Wide feet

Half a size up is the safer pick, and wide-footed runners should treat it as the default rather than the exception. The Lunarglide+ 3 is built on a fairly narrow stability platform, so the extra length also buys a little width through the forefoot. If a wide-width option is available, pair it with the half-size-up length.

Narrow feet

Narrow feet can sometimes hold true to size, since the Flywire and supportive upper cinch down well and prevent heel slip. Still, most narrow-footed runners in the Feetlot data land at half a size up to leave toe room for swelling, true to size only works if the foot is both narrow and short-toed.

For running vs. casual wear

If the Lunarglide+ 3 is being worn for actual mileage, commit to the half size up, running socks and mid-run foot swell both eat into length. For light, casual walking-only use, true to size can feel acceptable, but the toe box will read short next to a roomy lifestyle shoe.

How Nike Lunarglide+ 3 Compares to Other Shoes

According to Feetlot data, the Lunarglide+ 3 runs smaller than most casual shoes a reader is likely to own. Owners who have both in the Feetlot database tend to take a larger number in the Lunarglide+ 3 than in the Converse Chuck Taylor Core Ox and the Vans Authentic Lo Pro, roughly half a size up from those classics. It also runs noticeably smaller than the Clarks Desert Boot, where wearers take close to a full size larger in the Lunarglide+ 3.

Within Nike's own range, the gap is narrower: the Lunarglide+ 3 sits a touch smaller than the Nike Air Max 97 and the adidas Originals Marathon 88, so wearers take a quarter-to-half size up from those. Against dress shoes like the Allen Edmonds Kenilworth, the two land very close, only a hair apart, so the same number is usually safe.

Sign in to Feetlot and add a few of the shoes already owned to get a personal Nike Lunarglide+ 3 size recommendation calibrated to a real foot.

Nike Lunarglide+ 3 Size Chart (US / UK / EU)

Common Sizing Mistakes

• Buying true to size for running. The Lunarglide+ 3 runs slightly small and the toe box reads short once the foot swells mid-run, half a size up is the standard fix.
• Copying a lifestyle-shoe size. Sizing it the same as a Converse Chuck Taylor or Vans Authentic leaves runners cramped; the performance last is leaner, so size up from those.
• Ignoring width. The stability platform is narrow; wide feet that only size up in length may still feel pinched, look for a wide-width option where offered.
• Expecting the upper to stretch. Flywire and synthetic overlays lock the midfoot down and hold their shape; length will not open up with wear.

How Feetlot Computes These Numbers

Every Nike Lunarglide+ 3 sizing recommendation on Feetlot is the output of a global offset model fit to over 100,000 verified shoe records. Each shoe gets a single number, its "size offset", that captures how much its sizing drifts from the reference shoe, the Nike Air Force 1. When a Feetlot user provides their size in any tracked shoe, the model recovers their true foot baseline and recommends the matching Nike Lunarglide+ 3 size. This works better than a simple pairwise lookup because Feetlot uses the entire wardrobe graph: even when two users share no shoes directly, the chain of users between them transmits a consistent recommendation. That is why a shoe with a modest number of direct owners still gets a stable size estimate.