21 open mats · 17 gyms · 100% no-gi · updated daily
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Ranked by the Open Mat Score™ — gym rating, popularity, how welcoming, and consistency.
Drop-in-friendly picks for travelers passing through.
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The Open Mat Score (0–99) weighs the host gym's rating (30%), how well-known and busy it is by review volume (30%), how welcoming it is to visitors (20%), and how consistently it runs mats (20%). As Let's Roll check-ins grow, real attendance folds in.