True-to-Size Millimeter Sizing Comparison
Adidas Duramo SL 10 vs ASICS GEL-Nimbus 27
Detailed size conversion chart, cavity measurements in millimeters, and crowd-sourced fit advice for choosing your perfect size.
Interactive Size Converter
Select what size you wear in the Duramo SL 10 to see your calculated size in the GEL-Nimbus 27.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Duramo SL 10 (US) | Internal Cavity | GEL-Nimbus 27 Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4 | 237 mm | US 3.5 | 85% | +1.3 mm |
| US 4.5 | 241 mm | US 4 | 97% | -0.2 mm |
| US 5 | 245 mm | US 4.5 | 91% | +0.8 mm |
| US 5.5 | 249 mm | US 5 | 79% | +1.8 mm |
| US 6 | 254 mm | US 5.5 | 79% | +1.8 mm |
| US 6.5 | 258 mm | US 6 | 67% | +2.8 mm |
| US 7 | 262 mm | US 6.5 | 56% | +3.8 mm |
| US 7.5 | 266 mm | US 6.5 | 97% | -0.2 mm |
| US 8 | 271 mm | US 7.5 | 97% | -0.2 mm |
| US 8.5 | 275 mm | US 8 | 91% | +0.8 mm |
| US 9 | 279 mm | US 8.5 | 79% | +1.8 mm |
| US 9.5 | 283 mm | US 9 | 67% | +2.8 mm |
| US 10 | 287 mm | US 9.5 | 56% | +3.8 mm |
| US 10.5 | 292 mm | US 10 | 56% | +3.8 mm |
| US 11 | 296 mm | US 10 | 97% | -0.2 mm |
| US 11.5 | 300 mm | US 11 | 91% | +0.8 mm |
| US 12 | 304 mm | US 11.5 | 79% | +1.8 mm |
| US 12.5 | 309 mm | US 12 | 79% | +1.8 mm |
| US 13 | 313 mm | US 12.5 | 67% | +2.8 mm |
| US 13.5 | 317 mm | US 13 | 56% | +3.8 mm |
| US 14 | 321 mm | US 13 | 97% | -0.2 mm |
| US 14.5 | 326 mm | US 14 | 97% | -0.2 mm |
| US 15 | 330 mm | US 15 | 32% | +5.8 mm |
| US 16 | 334 mm | US 15 | 79% | +1.8 mm |
| US 17 | 342 mm | US 16 | 56% | +3.8 mm |
| US 18 | 351 mm | US 16 | 38% | -5.2 mm |
| US 19 | 359 mm | US 16 | 0% | -13.2 mm |
| US 20 | 368 mm | US 16 | 0% | -22.2 mm |
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Frequently Asked Questions
How does the Duramo SL 10 size compare to the GEL-Nimbus 27?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Duramo SL 10 has an internal fit offset of 0.16mm compared to -0.08mm for the GEL-Nimbus 27.
Do these shoes fit wide feet comfortably?
The Duramo SL 10 has a standard medium width profile, while the GEL-Nimbus 27 is snug/narrow.