Endorphin Speed 5
Fit verdict, size conversion guide, and millimeter measurements.
This shoe runs approximately 8mm shorter than standard sizing. Most wearers need a full size larger for comfortable toe room.
Aggregated feedback from verified shoe owners
| EU | US (M) | UK | Foot Length | Cavity Length |
|---|---|---|---|---|
| 36 | 4 | 3 | 22.4 cm | 232 mm |
| 37 | 4.5 | 3.5 | 23.1 cm | 239 mm |
| 40 | 7 | 6 | 25.1 cm | 259 mm |
| 40.5 | 7.5 | 6.5 | 25.4 cm | 262 mm |
| 41 | 8 | 7 | 25.7 cm | 265 mm |
| 42 | 8.5 | 7.5 | 26.4 cm | 272 mm |
| 42.5 | 9 | 8 | 26.7 cm | 275 mm |
| 43 | 9.5 | 8.5 | 27.1 cm | 279 mm |
| 44 | 10 | 9 | 27.7 cm | 285 mm |
| 44.5 | 10.5 | 9.5 | 28.1 cm | 289 mm |
| 45 | 11 | 10 | 28.4 cm | 292 mm |
| 46 | 11.5 | 10.5 | 29.1 cm | 299 mm |
| 46.5 | 12 | 11 | 29.4 cm | 302 mm |
| 48 | 13 | 12 | 30.3 cm | 311 mm |
Does the Saucony Endorphin Speed 5 run big or small?
No, it runs significantly small. We recommend ordering one full size up. This shoe runs approximately 8mm shorter than standard sizing. Most wearers need a full size larger for comfortable toe room.
How does Shoe Fit determine shoe sizing?
Shoe Fit calculates the real-world interior shoe cavity in millimeters combined with real owner feedback, rather than relying on arbitrary brand charts.
Already own a shoe that fits well? Shoe Fit cross-references its internal cavity against the Saucony Endorphin Speed 5 to give you your personalized size.
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