Nike Pegasus Plus vs Nike Pegasus 42:
Which to Choose

The clearest split is the midsole. The Pegasus Plus runs a full-length ZoomX PEBA superfoam that feels soft, springy, and genuinely energetic — its 5/6 responsiveness is the highest thing on either shoe's spec sheet, and it rewards you the harder you run. The Pegasus 42 instead pairs firmer ReactX foam with a curved, full-length Air Zoom unit; the pop is there once you're at pace, but it's a moderate 4/6 rebound that favors consistency over spring. Weight reinforces that gap: the Plus comes in around 244g (men's US 9) against roughly 286g for the Pegasus 42, so the Plus feels noticeably quicker and more eager underfoot, while the 42 feels like more shoe. Geometry differs too — the Plus has a 10mm drop on a 33mm heel / 23.6mm forefoot stack, whereas the 42 sits at a tall 14mm drop on a 36mm heel / 22mm forefoot platform, so you feel the 42's heel bias on every footstrike. Stability leans to the 42 (4/6 on a wider, more planted base) versus the Plus (3/6 on a taller, softer, fairly narrow platform that can feel a touch tippy at slow speeds). That's why their sweet spots diverge: the Plus is happiest from 5K through the half at tempo efforts, while the 42 genuinely stretches from 10K to the marathon on steady long runs and easy-to-moderate days.