Nike Pegasus 39 vs. 40 vs. 41: Differences and Reviews 2025

Nike Pegasus 39 vs. 40 vs. 41: Quick Comparison

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Nike Pegasus 39 Review

When the Nike Pegasus 39 released, there were a couple different improvements that caused excitement among runners. First, the shoe lost an entire ounce of weight (in running shoe terms, a lot) compared to the Pegasus 38, coming in at 9.2oz.Additionally with this version, Nike made the upper more lightweight and breathable, added padding to the tongue and collar, and incorporated Flywire technology to help stabilize your foot.Flywire is one of Nike’s integral technologies and first became available in 2008. It can be seen on many other shoes from Nike, not just running, with the main purpose of added stability and reduced weight. 

The midsole now has two Zoom Air bags over the Pegasus 38’s forefoot-only configuration, so there’s a better sense of cushioning balance. The React foam density is also softer than the 37 and 38, and that produces a higher level of ride comfort.The shoe feels more like the Pegasus 36 and is better-suited to fast running, while still being as comfortable as the 37 and 38.

It doesn’t have an exciting or lively ride but it’s great bang for your buck and very stable.It's a great choice for newbies who are aiming to hit their first 5K or a marathon. And for long-time runners, it's a trusty pick if you want a good ol' fashion ride that will keep you stable.

Nike Pegasus 39 Pros and Cons

Nike Pegasus 40 Review

The main difference in the Pegasus 40 compared to the 39, is in the way it supports your foot, with improved features in the sensitive areas - like your toes and arch - with a re-designed mid-foot band; you can definitely feel the slight raise in the sole, which hugs your arch, offering more support. Two Zoom Air units placed beneath the forefoot and heel provide impeccable support. They cushion each step and absorb the impact shock of your landings. An implemented midfoot band adds to this support, relieving pressure points as you walk, run, or jump. The foam midsole creates a comfortable ride but also enhances balance and stability. Along with the rugged rubber outsole, which helps you grip the ground, the midsole helps you feel steady on your feet. Plus, extra flexible outsole grooves allow for complete sole extension, creating a smoother feel as you move. 

In addition to this, Nike has also redesigned the upper with a single-layer of mesh, to improve breathability and airflow. An elevated foam collar and tongue create a soft fit around your ankle that won’t dig into your skin. 

With every Pegasus shoe Nike has produced, there’s no doubt the shoe has got better. In this case, it’s more supportive and breathable, which when it comes to a running shoe, are pretty important factors. If you’re someone who struggles with a collapsing arch or plantar fasciitis, the addition of the new mid-foot band may provide a more comfortable ride for you.

Nike Pegasus 40 Pros and Cons

Nike Pegasus 41 Review

The Nike Pegasus 41 changed a lot from the Pegasus 40 but didn’t change the last (foot shape around which the shoe is built). The MR-10 last stays which means the upper of the Pegasus 41 fits largely the same as the Pegasus 40. The tongue’s slightly thicker and more padded but otherwise it has the same basic lacing structure, lockdown, and comfortable engineered mesh upper. 

What really differs from the Pegasus 40 is the midsole. Nike replaced the original React midsole foam with a layer of its new ReactX foam and retained the Air Zoom units embedded in the forefoot and heel. It's 13% more responsive than previous React technology.But more than the cushion itself changing, the shape of the midsole feels more like the InfinityRN 4 than it does the Pegasus 40. The Pegasus 41 adds 4mm of foam and the rocker is reshaped at the forefoot and heel to feel like a more modern running shoe. When running, it feels like a more bouncy, resilient version of React. That’s a good thing in a shoe built for lots of miles.

One of the biggest discussion points with the Pegasus 41 is its use of sustainable materials; at a minimum, 20% of the shoe’s weight is recycled content. Nike’s commitment to sustainability includes focusing on the Move to Zero initiative, which is all about less waste and lower carbon emissions. For runners sensitive to the environment, this may make the Pegasus 41 an even more desirable buy.

Nike Pegasus 41 Pros and Cons

Nike Pegasus 39 vs. 40 vs. 41: The Key Differences

1. Cushioning Technology

The cushioning technology in running shoes greatly impacts comfort, support, and performance.Pegasus 39 and 40 features classic React foam known for its versatility and stability.The Pegasus 41 boasts an updated ZoomX foam for enhanced energy return.All incorporate two Zoom Air units for an extra layer of comfort.

ReactX is slightly softer than React so the 41 has a slightly softer ride, specifically in the rearfoot.This foam gives you 13% more energy return than the React foam in the Pegasus 40. The numbers tell an even better story - ReactX foam cuts the carbon footprint by 43% during manufacturing.

While Pegasus 40 and 39 have very similar support structures. The Pegasus 39 is more springy and the Pegasus 40 is more stable. And users often report that the 39 provides slightly better cushioning response than 40, thanks to its lighter weight and overall design.

2. Breathable and Lightweight

One of the key strengths of the Pegasus 39 is its comfort. Many runners praise the shoe for its breathable upper, which keeps your feet cool and comfortable during long runs. The lightweight nature of the shoe ensures that your feet won’t feel weighed down, reducing fatigue even on extended runs. The Pegasus 39’s breathable mesh upper helps with air circulation, which is a significant plus for runners in warm conditions.

The slight increase in weight for the 40 may be due to the updated upper material, which adds comfort but can affect agility.Pegasus 40 utilizes a traditional mesh with decent airflow.

The upper mesh of Pegasus 41 provides better ventilation.The Pegasus 41 stands taller with an extra 4mm stack height - 37mm compared to the 40's 33mm. This extra cushioning adds a bit of weight. 

3. Comfort and Fit

The overall fit and comfort are critical in selecting running shoes. Pegasus 40 has more accommodating and more comfortable than the Pegasus 39.The shoe offers a roomy toe box, appealing to those who prefer space.And there are also narrow, wide and extra wide width options of both available.Pegasus 41 has undergone slight adjustments for a more snug fit.However,there are only normal and extra wide width options available.

4. Performance and Durability

The Nike Pegasus 39 has earned its reputation for durability. Many runners report that the shoe holds up well over time, even after miles and miles of use. Its construction ensures that it can handle the rigors of daily running, whether you’re on the treadmill or hitting the pavement. The Nike Pegasus 40, while similar in durability, introduces some key performance upgrades. The enhanced heel area not only looks better but provides better stability when transitioning from one stride to the next. This subtle change can make a big difference in your overall performance, especially if you’re training for a race or focusing on improving your running mechanics. 

The Pegasus 41 midsole provides spring during short, fast-paced runs, turning into a steadfast cushion on long runs to keep the feet from feeling fatigued. Whether sprints of pace over distance, the consistent support of the shoe will save your legs from soreness, especially on the road.

Conclusion: Which One Should You Buy?

All of these shoes are solid choices for runners, but they serve slightly different purposes. There are very few differences between the Pegasus 39 and the Pegasus 40. The Pegasus 40 is slightly more comfortable because it has a softer, more accommodating upper.If you prefer a more stable, connected-to-the-ground feel and a comfortable upper, the Pegasus 40 is a great option. If you don’t mind getting the older version, you will save some money because the Pegasus 39 is now heavily discounted. They both have the same ride so you won’t be missing out much.The Pegasus 41 shines with its lighter weight and enhanced cushioning, making it ideal for speed and distance training. If you prefer a plusher, more cushioned ride for longer distances, the Pegasus 41 is a good choice. 

Frequently Asked Questions

How many miles can you run in Pegasus 39?

The shoe can withstand hundreds of miles mostly due to its hard-wearing rubber outsole.

How long does Pegasus 39 last?

With a double-layered sleeved upper, React midsole, and full-coverage outsole, the Pegasus 39 should last 450 miles.

Are Nike Pegasus 39 good for high arches?

The Nike Air Zoom Pegasus 39 is ideal for runners who value comfort, durability, and performance. It's a great choice for those who engage in daily running and speed training. The shoe is also suitable for runners with a neutral pronation and high arches.

Should I size up my Nike Pegasus 40?

The shoe fits true to size - so no need to size up or down.

Are Nike Pegasus 40 good for wide feet?

The Nike Pegasus 40 is on the narrow side, like most Nikes, but is available in a wide version on Nike's website.

How many miles can I run in Pegasus 40?

For most runners, the Nike Pegasus 40's functional lifespan will be 450 miles or more.

Are Nike Pegasus 41 good for wide feet?

Nike isn't known for shoes with wide toeboxes, but the Pegasus 41's toebox is wide enough.Previous versions of the Pegasus — and Nike running shoes in general — run narrow

Is the Nike Pegasus 41 worth buying?

Like most of its predecessors since 1983, the Nike Pegasus 41 is a versatile everyday training shoe with a nice mix of cushioning, comfort, and durability. It's a great choice for new, novice and casual runners who are seeking a model that can do most things well at an affordable price.

Is the Pegasus 41 a daily trainer?

The Nike Pegasus 41 is a daily trainer that offers runners a soft, smooth, and responsive ride with moderate cushioning.

Do I need to size up for Pegasus 41?

Nike Pegasus 41 fits true to size.

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