Courtyard by Marriott Gaithersburg Washingtonian Center — Event Spaces & Capacities
204 Boardwalk Pl, Gaithersburg, MD 20878
Courtyard by Marriott Gaithersburg Washingtonian Center in Gaithersburg offers 5 event spaces across 6,620 sq ft615 m² of function space. The largest room, Rio Ballroom (A-B-C), hosts up to 210 guests. Explore the floor plans and capacity charts below, or start arranging your own layout in the free planner.
Floor plans
Detailed floor plans for Courtyard by Marriott Gaithersburg Washingtonian Center are published on the venue’s official site.
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Room capacities & dimensions
| Space | Sq ft / m² | Ceiling | Banquet | Theater | Classroom | Reception | Conference | U-Shape |
|---|---|---|---|---|---|---|---|---|
| Outdoor TerracePlan this room → | 1,274 sq ft118 m² | — | — | — | — | 60 | — | — |
| Rio APlan this room → | 891 sq ft83 m² | 9 ft2.7 m | 48 | 70 | 40 | 60 | 25 | 27 |
| Rio BPlan this room → | 891 sq ft83 m² | 9 ft2.7 m | 48 | 70 | 40 | 60 | 25 | 27 |
| Rio Ballroom (A-B-C)Plan this room → | 2,673 sq ft248 m² | 9 ft2.7 m | 144 | 210 | 120 | 180 | 75 | 81 |
| Rio CPlan this room → | 891 sq ft83 m² | 9 ft2.7 m | 48 | 70 | 40 | 60 | 25 | 27 |
Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.