UK size guide
On Running Leggings Size Guide
Fit notes, product-level sizing signals, and review-backed guidance for buying On Running leggings online.
Community fit data is growing. Based on brand sizing information and product specifications.
Short answer
On Running leggings: what we know so far.
Performance-focused with a Scandinavian-influenced minimal aesthetic. Running tights are designed for runners, not general gym use. Excellent weather jacket. Narrow cut reflects the brand's road-running heritage.
Watch out: Hip cut runs narrow for pear shapes — size up or try a different brand. Limited colour range by design. Not appropriate for non-running activities.
Products in this guide
