Seattle, Washington
Seattle's judo scene is small but tightly affiliated with USJF and USA Judo, drawing from the broader Pacific Northwest's Japanese American community history. Several long-running dojos run the Kodokan curriculum strictly, and the market sees regular tournament travel to Portland, Vancouver BC, and the Bay Area. Tech demographics from Amazon and Microsoft contribute a stable adult roster.
The local picture
Why it works for Seattle
OLM's belt_promotions records carry issuing sensei, dojo, and a free-text note on every grading — court-admissible if a USJF or USA Judo question ever arises. Tournament registration handles weight class, age category, and member-vs-non-member pricing in one Stripe-collected flow. Long-tenure members sit on grandfathered plans with custom pricing that survives software updates.
In every Judo gym, anywhere
Kyu and Dan tracking with promoter lineage
Every grading recorded with the issuing sensei, date, and context. If a student moves to another dojo that also runs OLM, their Dan rank lineage travels with them.
Attendance against grading minimums
Set mat-hour requirements per rank. OLM tells you who meets the threshold for their next grading and who's short.
Shiai & event registration
Stripe-powered sign-ups for tournaments and events. Members pay from the app, you get a clean registration list with waiver status.
Multi-discipline aware
A judoka who also trains BJJ keeps separate ranks per art. Cross-training students are first-class in the system.
Seattle Judo academies we've heard of
Seattle Dojo · Bellevue Judo Club · Fife Judo Club
Listed for context only — no endorsement implied. If you run one of these and want OLM to power it, say hi.