Saucony Endorphin Pro 4 vs Endorphin Speed 5

The Saucony Endorphin Speed 5 and Saucony Endorphin Pro 4 may share a family, but they serve different purposes within the Endorphin lineup. The Pro 4 is a race-day super shoe built for peak performance with a carbon plate, a higher stack height, and a more propulsive, energetic ride. It's noticeably lighter, more aggressive, and features a snug, performance-oriented fit that's optimized for race conditions. The Speed 5, by contrast, is a plated super trainer. It's slightly lower to the ground and uses a nylon plate instead of carbon, offering more flexibility. The fit is also roomier, making it more comfortable and accommodating for runners who don't want an ultra-tight upper. If you're chasing a personal best and want maximum efficiency on race day, the Endorphin Pro 4 is the clear choice. But for runners who prefer something more approachable that can double for uptempo workouts and racing, the Speed 5 remains a solid alternative with a gentler feel and broader fit.