Does Nike React Infinity Run 4 (Men's) run true to size?

Based on 3 runner reports, the Nike React Infinity Run 4 (Men's) runs true to size for most runners.

Should I size up or down in Nike React Infinity Run 4 (Men's)?

Most runners recommend ordering your true size in the Nike React Infinity Run 4 (Men's).

Road · NeutralCurrent2023

Name: Nike React Infinity Run 4 (Men's)
Brand: Nike

Width options: standard, wide (Men's) · standard, wide (Women's)

Showing: Men's & Women's data combined

🟡Early reports

Based on 3 reports

Based on 3 reports: True to size

Early reports — based on fewer than 10 submissions. More data will improve reliability.

Came from	Bought	Length	Width	Issues	When
Asics Gel-Nimbus 27 (Women's) Size 9	unknown	✓ True to size	Too narrow	—	Mar 2026
Nike Pegasus 42 (Women's) Size unknown	unknown	✓ True to size	Too narrow	—	Mar 2026
Nike Pegasus 39 (Women's) Size unknown	unknown	✓ True to size	✓ True to width	—	Mar 2026

See how the Nike React Infinity Run (Men's) fits side-by-side with shoes runners know well.