Nike Pegasus 39 First Run Review: Back to Form for Nike's Daily Trainer

Introduction

Nike’s latest update to its best-known daily trainer arrived with unusually little fanfare, but after a first run of seven and a half miles straight out of the box, the Pegasus 39 looks like a meaningful return to form. This is a first impressions review rather than a long-term verdict, and we will follow up with a deeper breakdown once more miles are in the bank.

Background and Specifications

The Pegasus 37 was a favourite here: an underrated, versatile daily trainer that behaved well at slow speeds and still had some pop at higher tempo efforts. The 38 added weight, lost responsiveness, and felt clunkier as a result. On first sight, the 39 looks set to run much more like the 37, which is a good sign.

The headline numbers back that up. The shoe now weighs just 280 grams in a men’s UK 9.5, a big saving over the previous version, and it retails for around the £100 mark, which feels fair in today’s inflated running shoe market for a high-mileage daily workhorse.

Upper and Fit

The upper keeps a gusseted tongue but adds extra padding for top-of-foot comfort, and Nike has woven its Flywire technology through the lacing, pulling the midfoot in as you cinch the laces. The mesh is a lightweight, double-layered construction that feels durable enough for serious training mileage, with good structure and padding in the heel and ankle collar and a flared heel design.

On the run, the fit stood out immediately. The 38 sized small, but the 39 feels true to size with good toe room. The Flywire genuinely works rather than being a gimmick: the midfoot feels well locked down, heel lockdown is solid, and the notched laces hold tight without coming loose. Padding around the tongue, heel and collar is just right: comfortable without being over-padded.

The one caveat is width. This is still a fairly narrow-fitting shoe, so wider feet may struggle, though Nike offers the Pegasus in a wider fit option.

Midsole and Ride Performance

The biggest technical change is a second Air Zoom unit: one under the forefoot and one under the heel, embedded in a full React foam midsole. There is also a slight redesign at the back of the midsole and added flex grooves in the outsole for a more natural motion.

At slower paces, React feels characteristically cushioned and comfortable, though this is not a deeply cushioned shoe in the mould of a Hoka Clifton or Bondi. At tempo effort, around 6:35 per mile in testing, the shoe felt noticeably more responsive and better balanced than the flat-feeling 38, with the weight saving making it easier to get up on the toes.

The forefoot Air Zoom unit did feel slightly firm, and there may be a little less energy return at toe-off than the 37 delivered. That could simply be a bedding-in issue on a brand new pair, and it is something to watch over more miles.

First Impressions on the Road

The test run covered seven and a half miles on a busy, sunny day, mixing steady miles with a few quicker efforts in the middle. Comfort was excellent throughout; running in them felt effortless in the way a pair of slippers is. Combined with the improved fit and lockdown, these early miles suggest this could be the best Pegasus since the 36, and a big step forward from the fit and heel-slip issues some runners had in the 37 and 38.

Buying Advice

The obvious comparison at this price point is the Reebok Floatride Energy 4, which retails at £75 full price and has set a high bar for daily trainers. The honest answer is that more miles are needed in both before calling a winner. What is clear already is that the Pegasus 39 works better for narrower foot shapes, with a more secure, dialed-in midfoot and no lateral or medial slippage compared with the Reebok.

If your foot shape suits the upper and you want a light, responsive daily trainer that can also handle quicker sessions, the Pegasus 39 is an easy recommendation at this stage.

Conclusion

The Pegasus 39 fixes many of the complaints that dragged down its predecessor: it is lighter, more responsive at pace, and dramatically better fitting. Early miles are genuinely promising, and with a bit of bedding in, the forefoot bounce could improve further. A full in-depth review will follow, but the first impression is a positive one and a welcome return to form for this long-running line.