Saucony Endorphin Speed 4 Reviews

Uses it for intervals and 5k/10k races; normal at easy paces and turns over really well when fast.

A 225 lb runner loved the Endorphin Speed 4 over 200 miles and used it as a one-shoe rotation from easy runs to threshold, despite a snug midfoot.

Nick Harris-Fry calls it an exceptionally versatile shoe for training and racing. Some runners may want a softer ride with more forefoot foam on long, hard runs.

Shines at any pace and is a blend of v2 and v3. The first run felt mushy, but it won her over after 150 miles. The tongue bunches, the laces are too long, and the toe box angles in.

A faster, more aggressive Speed and a go-to long-run shoe, much more durable than v3 for him. Excellent wet traction. The heel feels clunky at first, and calves work harder at speed.

After 75 miles the Endorphin Speed 4 is fun and fast but too narrow; looking for Speed 2s.

Has run 50 km in the Endorphin Speed 4 with no foam issues; adjusting the lacing solved their toe-box worry and it felt great at all-out 10k effort.

First 5k in the Endorphin Speed 4 after a worn Invincible 3: much more playful and fun, about a minute per mile faster at a sustainable effort, though the forefoot is a little narrow and the exposed outsole foam is a durability worry.

Has about 40 miles in the Endorphin Speed 4 and nearly 300 in the Speed 3; prefers the Speed 3 for slow zone 2 miles but finds the Speed 4 incredibly snappy and propulsive for tempo and track work.

After 55 km agrees the Speed 4 rides better at faster paces.