Nike Structure 25 vs Nike Structure Plus:
Which to Choose

Start with what they share: both are neutral-to-mild stability trainers rated 5/6 for stability, both run a traditional high drop (10mm for the Structure 25, 11mm for the Plus), both go plateless, and both list the same 10K/half/marathon range with steady daily and long efforts as the target. Neither is a snappy shoe — responsiveness is modest (3/6 for the 25, 4/6 for the Plus), and both settle and support rather than spring you forward, so pace pushes reveal a muted, slightly flat rebound in each. The real divide is the midsole. The Structure 25 uses a firm Cushlon 3.0 foam that sits lower and gives genuine road feedback: RunRepeat's calipers put it at 36.7mm heel / 24.6mm forefoot. The Structure Plus stacks a soft ZoomX PEBA top layer over a firmer ReactX carrier for a much taller, pillowier ride, measured at 41mm heel / 30mm forefoot — noticeably more foam underfoot and a maximum (6/6) cushioning rating versus the 25's moderate-to-high (4/6). Their stability strategies differ to match: the 25 leans on a firm, planted platform with prominent arch support and a guide-rail feel, while the Plus keeps its tall, softer stack from tipping with the Midfoot Support System's high medial and lateral sidewalls. Counterintuitively, the taller Plus is the lighter of the two — about 292g versus roughly 302g for the 25 at a men's US 9 — because the ZoomX superfoam offsets the extra height. Their comfortable pace zones line up with their builds: the firmer 25 is happiest around 5:00–6:00 min/km, while the plusher Plus settles a touch slower at 5:30–6:30 min/km and leans hardest into marathon-distance long runs.