Nike Pegasus 42 vs Brooks Ghost 18:
Which to Choose

The core split is energy versus calm. The Pegasus 42 pairs ReactX foam with a full-length Air Zoom air unit, and that gives it a distinct pop that "wakes up" as you pick up the pace — its responsiveness rates a notch higher and it stays effective into a quicker zone (roughly 4:45–5:15 min/km at its fastest). The Ghost 18 leans the other way: its nitrogen-infused DNA Loft v3 is an EVA-based foam tuned for a smooth, planted, muted-rebound roll rather than spring-back, so it feels more cushioned and controlled but never eager, and it tops out a touch slower. Geometry is the other real difference. Both are high-drop, heel-biased shoes, but the Pegasus sits at 14mm (36mm heel / 22mm forefoot) while the Ghost is 12mm (37mm heel / 25mm forefoot) — so the Ghost carries noticeably more foam under the forefoot and a slightly gentler offset, giving a plusher, more even feel underfoot, whereas the Pegasus is firmer and more heel-heavy up front and rewards heel strikers who want a firm, connected platform. Weight, stability, and durability are effectively a wash: both are heavier than many modern trainers, both are stable-neutral with no pronation posting, and both are built to last rather than to race. In short, the Pegasus is the livelier, firmer, more "willing to go" trainer; the Ghost is the softer, smoother, more predictable cruiser.