Running shoes Nike INFINITYRN 4

The Nike InfinityRN 4 is a highly cushioned road running shoe designed for easy runs, recovery days, and daily training. Built on a stable platform with generous cushioning, it serves beginners, heavier runners, and marathoners looking for a comfortable shoe to log high mileage at relaxed paces.

The Nike InfinityRN 4 features a ReactX midsole, an injection-molded foam that delivers medium softness on landing with responsive take-off. The foam provides solid energy return while maintaining a plush, comfortable ride that sits between cushioned and firm. The high stack height and smooth rocker geometry create a floating sensation from heel to toe, making it well-suited for easy-paced runs, recovery sessions, and moderate-distance outings. The midsole's soft character makes the shoe best suited for relaxed efforts rather than faster work.

The Flyknit upper is soft, stretchy, and compressive, molding to the foot with a sock-like feel. A semi-gusseted tongue and internal elastic fit band provide secure midfoot lockdown, while the roomy toe box accommodates foot spread during longer runs. The shoe runs snug and most runners size up half a size for optimal comfort. Stability comes from a wider sole base, significant midsole sidewalls in the heel and midfoot, and subtle medial shaping that offers mild support without prescriptive guidance. The result is a neutral shoe with inherent stability suitable for mild pronation.

The Nike InfinityRN 4 rolls on a full-coverage rubber waffle outsole that prioritizes durability and provides good traction on dry roads. Grip drops off somewhat on wet surfaces. While primarily a road shoe, the durable rubber and stable platform handle easy packed trails in dry conditions. The outsole is segmented for flexibility despite the high stack.

Weight: 314g (EU 42.5)
Drop: 9mm
Stack: 39mm heel / 30mm forefoot
Terrain: Road
Pronation: Neutral to mild overpronation