Short answer
The Nike Structure 26 offers a modern, geometry-driven approach to stability, but its highly specialized fit profile demands close attention before purchasing. While it runs true to size (TTS) in terms of standard athletic length, the overall interior volume is exceptionally snug and compressed.
Runs true to size
Cross-sizing: what size to buy
Find a shoe you already own and read across to the Nike Structure 26 size to buy.
| Reference Shoe | US | EU | ||
|---|---|---|---|---|
| Your usual | Buy | Your usual | Buy | |
| Nike Air Force 1 | 10 | 11.0 | 44 | 45 |
| Nike Pegasus 41 / 42 | 10 | 10.5 | 44 | 44.5 |
| Brooks Adrenaline GTS 25 | 10 | 10.5 | 44 | 44.5 |
| New Balance 860v14 | 10 | 10.5 | 44 | 44.5 |
| ASICS GT-2000 13 | 10 | 10.0 | 44 | 44 |
-
Nike Air Force 1
Your usual Buy US 10 11.0 EU 44 45 -
Nike Pegasus 41 / 42
Your usual Buy US 10 10.5 EU 44 44.5 -
Brooks Adrenaline GTS 25
Your usual Buy US 10 10.5 EU 44 44.5 -
New Balance 860v14
Your usual Buy US 10 10.5 EU 44 44.5 -
ASICS GT-2000 13
Your usual Buy US 10 10.0 EU 44 44
Fit Notes
- Nike Air Force 1
- The Air Force 1 utilizes a generous lifestyle last with a spacious, rounded toe box. To match the longitudinal length and properly accommodate the tight, tapered performance toe box and low vertical ceiling of the Structure 26, a full size increase is required.
- Nike Pegasus 41 / 42
- While both models align with Nike's standard athletic length baseline, the Pegasus series features a much more flexible upper and forgiving forefoot space. Because the Structure 26 has a restricted 25.7 mm vertical height and tighter midfoot overlays, sizing up a half size is recommended for medium-to-wide feet to achieve a comparable fit.
- Brooks Adrenaline GTS 25
- The Adrenaline GTS offers a more accommodating standard medium width with superior lateral stretch throughout the upper. Sizing up a half size in the Structure 26 is necessary to mirror the forefoot width and lateral room of the Brooks model, compensating for Nike's sharply tapered 71.9 mm toe box.
- New Balance 860v14
- New Balance employs an anatomically wider, more relaxed toe box shape. The Structure 26 fits significantly tighter across the toe box ceiling and sides. A half-size adjustment up is required to avoid localized friction and replicate the toe splay clearance of the New Balance trainer.
- ASICS GT-2000 13
- Both models use snug, performance-minded lasts designed to lock the foot down firmly over a stability platform. The narrow profile of the ASICS forefoot maps directly to the standard narrow width of the Structure 26, allowing you to stay true to size without length or width contradictions.
Sizing FAQ
Does the Nike Structure 26 run true to size?
The Nike Structure 26 runs true to standard athletic length, meaning runners should initially look at their typical Nike size. However, the interior volume of the shoe is highly compressed. The combination of a narrow 93.7 mm midfoot, a tapered 71.9 mm toe box, and a low 25.7 mm vertical height creates an exceptionally snug fit. Runners who prefer a roomier forefoot, have wider feet, or plan to use thick running socks are highly encouraged to size up a half size.
Is the Nike Structure 26 good for wide feet?
The standard medium (D) width of the Nike Structure 26 is narrow and is not highly recommended for wide feet. While Nike offers Wide (2E) and Extra-Wide (4E) versions, user feedback indicates these updated wide configurations run narrower and slightly shorter than previous models. True wide-foot runners will likely find the midfoot overlays and tapered toe box restrictive. Those with wide feet who still want to purchase the Structure 26 should choose the Wide or Extra-Wide option and size up a half size to ensure sufficient space for natural toe splay.
How is the arch support on the Nike Structure 26?
The Nike Structure 26 provides excellent, highly stable arch support through its updated Midfoot Support System. By employing geometric sidewalls that wrap the medial arch and lateral heel, the shoe guides the foot smoothly and prevents overpronation without the harsh, rigid feel of traditional plastic medial posts. For runners who overpronate, this design offers comfortable, corrective support that minimizes arch pain. However, neutral runners or those with high arches may feel noticeable, constant underfoot pressure, which can feel like an overcorrection during initial runs.
Specs & Sizing
| Weight | 321 g |
|---|---|
| Retail price | $130 |
| Price on Amazon | $95–$130 |
| Release year | 2025 |
| Upper | Engineered mesh with plush collar and padded tongue for breathability and comfort |
| Midsole | Full-length ReactX foam (13% more sensitive than prior React foam) |
| Outsole | Mixed rubber—softer blown rubber in forefoot, firmer durable rubber in heel and lateral zones |
| Technologies | Advanced midfoot stability wrap (medial arch + lateral heel), Reflective detailing for low-light visibility, 10mm heel-to-toe drop |
| Fit & sizing | True to size for standard width; half-size up recommended for narrow feet or thicker socks |