DeBalsi won the race in 9:34.57, edging runner-up Hannah Christen of Virginia by three seconds. Regan Rome of Pennsylvania was third in 9:37.71.
There were 20 runners in the field, including athletes from Canada.
"It's awesome, I've never been in such a big stadium.,’’ DeBalsi said on the Penn Relays website. “I wanted a fast time overall. I wanted to go a bit faster than I did, but I kind of got caught in the pack. But I can't complain how it turned out."
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