Bischof, who will attend Duke University next year, wasn't trying to run her fastest.
"My time wasn't my best on this course. I'm saving up for next week," Bischof said. "It's my senior year, and my goal is to run my fastest time in my last race."
On Saturday will be the Meet of Champions race on the same course. The top 10 individuals, the top three teams in each group, and the two teams whose top-five runners have the best total times among all the fourth- and fifth-place teams qualify to compete.
While Bischof went into her race with much confidence, Lacy, the defending Group 4 champion, wasn't as optimistic.
"I have a slight groin pull," said Lacy, who won the Group 4 race in 18:27. "I hadn't run since Wednesday and was a bit nervous before the race. I didn't feel good, and my goal was not to aggravate the injury with all the hills and stuff on this course."
Despite her injury, Lacy still recorded the fastest girls' time of the meet.
"I took it out slow because I didn't know how my body would handle a faster pace," Lacy said. "After the bowl [section of the course], I started to pull away. I was surprised how well I did."
No area team captured a team title, and Moorestown and Delsea, which finished second and third in Group 3, were the only teams to qualify for the Meet of Champions.
Moorestown's second-place finish in Group 3 shocked the entire team.
"Coming in second was a big surprise to all of us," the Quakers' Emily Juliano said. "It was so totally unexpected since our top runner, Tara Monihan, is injured. But everyone did their best times today and we kept a good pack throughout the race."
Contact Bob Cabnet at rallysports@phillynews.com.