Hundreds of builders, contractors, suppliers and industry professionals will unite at Builder Mart 2026 to attempt a Guinness World Records™ title for the “Most Nails Hammered Simultaneously”. The one-of-a-kind event will showcase the power of Maryland's building industry while creating a memorable and highly visual moment for attendees and media alike.
WHAT The Maryland Building Industry Association (MBIA) will attempt to make history at its annual Builder Mart trade show with a Guinness World Records™ attempt for “Most Nails Hammered Simultaneously.” Hundreds of members of Maryland’s building and construction industry will come together for the record-breaking attempt, putting their hammers to work at the same time in an effort to Nail the Record + Make History. The event will follow MBIA’s annual Builder Mart trade show which brings together builders, contractors, suppliers, manufacturers and other industry professionals from across Maryland. Builder Mart 2026 will have 125+ builder exhibitors, the annual BUILD Competition, networking opportunities, and a Bull & Oyster Roast. WHEN Wednesday, October 21, 2026Builder Mart: 10 a.m. – 5 p.m.Guinness World Records Attempt: 5 p.m. WHERE Howard County Fairgrounds2210 Fairgrounds RoadWest Friendship, MD 21794 WHO
Maryland Building Industry Association members and industry professionals
MBIA leadership and participating sponsors
Guinness World Records official adjudicator
Hundreds of participants attempting to set the record
General public is welcome.
WHYThis Guinness World Records attempt will bring Maryland’s building industry together for a one-of-a-kind event celebrating the people who build, supply and support Maryland communities.The campaign is appropriately named “Nail the Record.” MEDIA OPPORTUNITIES
Video and photography of the Guinness World Records attempt
Interviews with MBIA leadership and Guinness World Records official adjudicator
Interviews with participating builders and industry professionals
Crowd shots and action footage of hundreds of participants hammering simultaneously
Sponsor and participant photo opportunities
Guinness World Records announcement/results around 5:30 p.m.
MEDIA CONTACTKristin Hogle, Program DirectorMaryland Building Industry Associationkhogle@marylandbuilders.org443-629-9586
