The Zoom Air unit actually shrank since the last iteration of the shoes, where it was full-sized, and in my opinion, it helped a great deal in improving stability. This doesn't mean the Peg 37 is not a fast running shoe: the Zoom Air pockets under the forefoot will provide plenty of energy return. Don't get me wrong, I ran terrific times in the Vaporfly (compared to my usual pace) but still, running in the Pegasus 37, I felt less pressured to push myself to the limits and more inclined to just enjoy the ride. It is soft and bouncy, and cushioned, all at the same time.

I liked the React foam before, but I only really warmed to it wearing the Pegasus 37. There is a lot of support on offer here, and the padding is just sublime. I found the collar of the Nike Air Zoom Pegasus 36 Trail a bit too low, but that's not the case with the Pegasus 37. The heel area makes the Nike Air Zoom Pegasus 37 stand out from the competition. As much as I love the softer laces on my trusty Brooks Hyperion Tempo, I must admit, the more traditional laces of the Pegasus 37 also work well. The toe box is a bit narrow but not uncomfortably, and there is ample support on the medial and lateral sides of the shoes, just under the eyelets. The Pegasus 37 was comfortable to wear and to run in.

Although the Nike Air Zoom Pegasus 37 uses a similar-looking sole structure as the Vaporfly, the Peg 37 is much more forgiving than its racing sibling, thanks to the more stable React foam. It breaks my heart when I see pronating runners trying to use the thin Nike ZoomX Vaporfly NEXT% platform on races: their stride breaks at every step, struggling to keep the foot balanced. (Image credit: Nike) Nike Air Zoom Pegasus 37 review: Ergonomics

White nike air zoom pegasus 37