Just looking at the outdoor national schedule.
Anyone in the Northeast if they wanted to commit to drive on Friday and Sunday can hit in succession:
Bristonl TN June 1
High Point PA June 8
Budds Creek MD June 22
Southwick MA June 29
Red Bud MI July 6
And then wait till August 10 for Unadilla.
6 doable Nationals in 70 days.