Salomon Speedcross 6 vs Nike React Infinity Run 4 Sizing
Salomon Speedcross 6 vs Nike React Infinity Run 4: side-by-side fit, toe-box width and the exact size to order in each — they fit the same length. Free interactive sizing comparison.
Do the Salomon Speedcross 6 and Nike React Infinity Run 4 take the same size?
Yes — keep your usual size. A US 10 in the Speedcross 6 is about a US 10 in the React Infinity Run 4.
How they compare
Salomon Speedcross 6 → Nike React Infinity Run 4: The Salomon Speedcross 6 runs true to size and has a slightly narrower toe box compared to the Nike React Infinity Run 4. Your US 10 in the Speedcross 6 translates to the same size in the React Infinity Run 4.
Nike React Infinity Run 4 → Salomon Speedcross 6: The Nike React Infinity Run 4 runs true to size and has a slightly wider toe box compared to the Salomon Speedcross 6. Your US 10 in the React Infinity Run 4 translates to the same size in the Speedcross 6.
Spec comparison
| Spec | Salomon Speedcross 6 | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | Moderate | High |
| Upper Material | Textile | Flyknit |
Size conversion: Salomon Speedcross 6 → Nike React Infinity Run 4
If you wear these US sizes in the Speedcross 6, here is the size to order in the React Infinity Run 4.
| Your US size in Speedcross 6 | Recommended React Infinity Run 4 size |
|---|---|
| US 8 | US 8 |
| US 9 | US 9 |
| US 10 | US 10 |
| US 11 | US 11 |
| US 12 | US 12 |
Frequently asked questions
Which runs bigger, the Salomon Speedcross 6 or the Nike React Infinity Run 4?
The Salomon Speedcross 6 and Nike React Infinity Run 4 fit the same in length — both are true to size — so you can keep your usual size moving between them.
If I wear a US 10 in the Speedcross 6, what size is the React Infinity Run 4?
Target a US 10 in the React Infinity Run 4. A US 9 in the Speedcross 6 maps to about US 9, and a US 11 to about US 11.
Is the Speedcross 6 wider than the React Infinity Run 4?
The Salomon Speedcross 6 has a slightly narrower toe box versus the Nike React Infinity Run 4 (standard vs wide). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the Speedcross 6 and React Infinity Run 4 compare on support and material?
The Speedcross 6 pairs moderate arch support with a textile upper; the React Infinity Run 4 has high support and a flyknit upper.
Try it: adjust the size and compare live
Verdict
The Salomon Speedcross 6 runs true to size and has a slightly narrower toe box compared to the Nike React Infinity Run 4. Your US 10 in the Speedcross 6 translates to the same size in the React Infinity Run 4.
| Spec | Salomon Speedcross 6 | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | Moderate | High |
| Upper Material | Textile | Flyknit |