She fell short of the U.S. record, but Huddle still collected her 19th national title.
The 35-year-old hopes to go under 2:30.
Emily Infeld finished as top American in 31:46, 14 seconds back.
The debutante made her first 10K a memorable one on Monday.
She was the runner-up at the 5K Road Championships.
Two big road wins in a row for American 5,000-meter record holder.
American 5,000-meter record holder looking for repeat win at Tufts 10K for Women.