Experience next-level comfort with the Cloudtilt road running shoe, designed for soft landings and explosive toe-off on every stride. Featuring a Cloudtec® Phase midsole and engineered mesh upper, it delivers adaptive cushioning, breathable support, and all-day wearability. Swiss engineering, versatile colour options, and a wide size range make it suitable for both dedicated road runs and everyday lifestyle wear.
On foot-length guide (cm)
Approximate foot lengths are matched to the existing US men’s size in each option, using On’s published JP sizing and its guidance that JP size is about 1 cm longer than measured foot length.
| Existing size label |
Approx. foot length |
| US M 3.5 / US W 5 / UK 3 / EU 36 |
21.0 cm |
| US M 4 / US W 5.5 / UK 3.5 / EU 36.5 |
21.5 cm |
| US M 4.5 / US W 6 / UK 4 / EU 37 |
22.0 cm |
| US M 5 / US W 6.5 / UK 4.5 / EU 37.5 |
22.5 cm |
| US M 5.5 / US W 7 / UK 5 / EU 38 |
23.0 cm |
| US M 6 / US W 7.5 / UK 5.5 / EU 38.5 |
23.5 cm |
| US M 6.5 / US W 8 / UK 6 / EU 39 |
24.0 cm |
| US M 7 / US W 8.5 / UK 6.5 / EU 40 |
24.0 cm |
| US M 7.5 / US W 9 / UK 7 / EU 40.5 |
24.5 cm |
| US M 8 / US W 9.5 / UK 7.5 / EU 41 |
25.0 cm |
| US M 8.5 / US W 10 / UK 8 / EU 42 |
25.5 cm |
| US M 9 / US W 10.5 / UK 8.5 / EU 42.5 |
26.0 cm |
| US M 9.5 / US W 11 / UK 9 / EU 43 |
26.5 cm |
| US M 10 / US W 11.5 / UK 9.5 / EU 44 |
27.0 cm |
| US M 10.5 / US W 12 / UK 10 / EU 44.5 |
27.5 cm |
| US M 11 / US W 12.5 / UK 10.5 / EU 45 |
28.0 cm |