Centennial ran away with the meet.
The third-ranked Centennial boys team had five runners finish in the top nine, including first-place Kevin Hill, to top No. 10 Oakland Mills, Atholton and Howard.
The Centennial girls squad found similar success, as five finished in the top 11 to give the host Eagles a sweep of the quad meet.
The Eagles won the boys race with 25 points. Oakland Mills was next with 36 points, followed by Atholton (88) and Howard (91).
For the girls, the results were much closer.
Centennial came in first with 40 points, nipping Atholton (44) and Oakland Mills (47). Howard came in fourth with 115 points.
The first-place performance by Hill sparked the boys. Hill (17 minutes, 1 second) took the lead about 1 mile into the 3.1-mile race and topped Greg Curtis of Oakland Mills by 12 seconds.
Rain began to fall just before the start of the varsity races, cooling things off and pleasing Hill.
"I didn't mind it," said Hill. "It's nice running when it's not too hot."
Bobby Van Allen (17:24) finished third, edging Steve Olenick (17:24) for Centennial. Mike French (18:09) ended up eighth and Tom Maczko (18:26) took ninth for the Eagles.
"Certainly I'd like to have my top five in the top 15," said Centennial coach Al Dodds. "We had a little more depth than the other teams."
Oakland Mills made it difficult for the Eagles. The Scorpions placed five runners in the top 11, led by Curtis, Eric Larsen (18:01, sixth) and Steve Petro (18:04, seventh).
Among the girls, Dana Strickland of Atholton won in a time of 20:48, beating Kari Meyer of Centennial by 12 seconds.
"I wasn't really sure how I was going to do because I'm getting over a cold," said Strickland. "But I felt fine."
The key for Centennial was having its second through fifth runners come in consecutively. Allison Poples (22:43), Stacy Cabanilla (22:53), Cherie Sticha (23:00) and Gretchen Heilman (23:26) took eighth through 11th.
"I told the girls we'd need to run in a tight pack," said Dodds. "We'd need to run closer together than we had in some of the Invitationals."
Second-place Atholton got good performances from Gail Hodges (21:54, fifth) and Amanda Lipscomb (22:42, seventh). Third-place Oakland Mills took third, fourth and sixth with Lauren Drake (21:29), Amanda Beckenstein (21:30) and Alicia Brown (22:25), respectively.