Nike

Pegasus 41

Does the Pegasus 41 run big or small?

Nike Pegasus 41 fits true to size in length as Nike’s everyday trainer. The toebox tapers, so wide feet should use Nike’s Wide/Extra Wide…

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True to Size True to size; use Wide/Extra Wide rather than length-up
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What size should you buy?

Interactive suggestion based on this model’s fit offset (+0 US). Always confirm with a retailer return policy.

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Measured / size chart (cm)

Numbers only when sourced. Empty fields stay blank — we do not invent mm.

Internal length
27.4 cm (273.9 mm)
Forefoot width
94.6 mm
Toebox width
72.9 mm
Reference size
US_M9

Lab measurement · Source: RunRepeat lab · Updated: 2026-08-13

Lab cut at US men's 9. Full length+width published; tapered toebox — Wide/XW for forefoot.

Know your foot length? Open the cm → size converter.

Nike size chart (foot-length cm)
US MUKEUcm
65.53823.5
6.5638.524
76.539.524.5
7.574025
87.540.525.4
8.5841.525.9
98.54226.2
9.5942.526.7
109.543.527.1
10.5104427.5
1110.544.527.9
11.5114528.4
1211.545.528.8
1312.54729.7

Chart cm is approximate foot length for label matching — not a lab internal cut. Use the cm converter to map foot length across brands.

Fit scenarios

Width
Length and width are separate — see wide feet / narrow fit.
Width
Standard running last; wide options on some SKUs
Break-in
None

Summary

Nike Pegasus 41 fits true to size in length as Nike’s everyday trainer. The toebox tapers, so wide feet should use Nike’s Wide/Extra Wide options — sizing up in length often adds heel slip without fixing forefoot pinch.

Sources: OutdoorGearLab Pegasus 41 (TTS length; tapered toebox — try Extra Wide) · Captain Creps Pegasus 41 (TTS; Wide available) · GetSize Pegasus 41 (TTS Nike running) · methodology

Women’s sizing

Nike uses a 1.5-size women’s→men’s US gap (not always 1.5). Convert your women’s US size with this model’s fit offset built in.

Women’s size in Pegasus 41 · All brands

What size did you take?

Anonymous fit check for Nike Pegasus 41. Helps future readers — we never invent crowd stats.

Community results stay private until 25 responses for this page — no fake percentages.

Prefer email? Fit feedback.

FAQ

Does the Nike Pegasus 41 run big or small?
True to Size. True to size; use Wide/Extra Wide rather than length-up Nike Pegasus 41 fits true to size in length as Nike’s everyday trainer. The toebox tapers, so wide feet should use Nike’s Wide/Extra Wide options — sizing up in length often adds heel slip without fixing forefoot pinch.
What size should I buy in the Nike Pegasus 41?
True to size; use Wide/Extra Wide rather than length-up
Are the Nike Pegasus 41 good for wide or narrow feet?
Standard running last; wide options on some SKUs Narrow feet may want a half down or tighter lacing; wide feet often stay closer to True to size; use Wide/Extra Wide rather than length-up.
Should I size up in the Nike Pegasus 41 for thick socks or break-in?
Break-in: None. Thick socks add volume — try the sock you will wear with the usual size advice before jumping a full size. See the thick socks & boot break-in guides.
How do women’s sizes work for the Nike Pegasus 41?
Open Women’s sizing for this model at /womens/nike/pegasus-41/ for the brand’s men’s↔women’s gap plus this model’s fit offset. Do not assume every brand uses a 1.5 gap.

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Generic US / UK / EU / cm reference

Secondary Mondopoint-style table. Prefer the brand chart in Measured / size chart (cm) when converting. Primary system: US_M.

USUKEUcm
65.53924.0
6.5639.524.5
76.54025.0
7.5740.525.5
87.54126.0
8.584226.5
98.542.527.0
9.594327.5
109.54428.0
10.51044.528.5
1110.54529.0
11.51145.529.5
1211.54630.0
1312.547.531.0

Where to buy

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