Starting May 1st, USA BMX will be doing sanctioned MTB specific races on BMX tracks across the country. Below is the official info from USABMX.com
USA BMX & BMX Canada have created 5 new classes for Mountain Bikes. These categories will be available nationwide at sanctioned USA BMX races. A sanction driven summer series for Mountain Bikes begins on May 1st, 2025. The series will point and rank riders from May 1st to August 31st in 2025. The classifications will follow the popular USA BMX district points and riders will accumulate points towards their assigned district at each event they participate in. There will be a special award for the series winner in each of the districts for both the Dirt Jumper category and Mountain Bike category. ~USABMX.com