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Nike Air Zoom Pegasus 42: Specifications, Fit & Feature Guide

The Nike Air Zoom Pegasus 42 is a neutral road-running daily trainer designed for everyday runs, jogging, and all-day wear. It introduces a full-length Air Zoom unit paired with ReactX foam midsole cushioning and an updated MR-10 2.0 last. People looking at this model often want to know its weight, drop specifications, fit adjustments, and key updates from prior iterations.

Specifications

Official Heel-to-Toe Drop
10 mm
Weight
Approx. 300g / 10.5oz (Men's US 10); 243g / 8.6oz (Women's US 8)
Midsole Cushioning
ReactX foam midsole with a full-length, curved Air Zoom unit
Last Model
MR-10 2.0 Last (updated from Pegasus 41)
Upper Material
Soft lightweight mesh with ventilation holes and semi-gusseted tongue
Available Fit Options
Regular and Wide fits
Insole Thickness
5.0 mm (removable)
Safety Features
Reflective heel elements

Common faults

Flat or uninspiring ride
Some runners report that despite the full-length Air Zoom unit and 37mm stack height, the midsole foam delivers limited energy return and a flatter feel at faster paces.
Narrow toe box fit
Despite updates to increase space, user testing indicates the interior toe box can still feel narrow, requiring a half-size larger selection or opting for the Wide fit.

Maintenance

Insole Care / Replacement
The shoe includes a removable 5.0 mm insole, which can be taken out for cleaning or replaced with custom orthotics.
Upper Mesh Cleaning
Keep ventilation holes along the toe box and side panels clear of dirt to preserve upper breathability.

Parts & consumables

Removable Insole
Standard 5.0 mm stock sockliner; replace when worn or swap for custom orthotics as needed.

Questions people ask

What is new on the Nike Pegasus 42 compared to the Pegasus 41?
Updates include a full-length curved Air Zoom unit (replacing separate heel/forefoot units), size-specific Air Zoom tuning, an updated MR-10 2.0 last, and greater toe spring.
What is the retail price of the Nike Pegasus 42?
The shoe retails for $145 USD / €140 / £130.
Is the Nike Pegasus 42 suitable for orthotics?
Yes, it is orthotic friendly and includes a removable insole.

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